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|Original airdate||September 24, 2010 – May 13, 2011|
|Finale||"Finale, Part 2"|
|Next||Smallville Season 11 (comic book)|
The end of the beginning starts here. Taking flight in its tenth and final season, this modern retelling of a hero's legendary origins continues to blend realism, action, heart and humor as Clark Kent soars toward claiming his birthright.
Clark has emerged from his darkest hour, only to find the path to his destiny blocked by ghosts from the past—shadows in the present tempting Clark toward the darkness at every turn. Despite insurmountable odds, is Clark strong enough to step into the light and claim his rightful place as Earth's mightiest protector?
As "Smallville's" epic ninth season came to a close, General Zod and his Kryptonian Army declared war on the people of Earth. Clark prevented the deaths of thousands, if not millions of humans by using the Kryptonian Book of Rao to stop the attack. The spiritual tome opened a gateway to another world, one where Clark's people could exist in peace. One-by-one, every Kryptonian on Earth was propelled across the universe, but as Clark prepared for his "ascension," Zod refused to leave. Using a blue kryptonite dagger to make himself human and avoid being sucked into space, Zod remained behind so that he could rule a world without its guardian, Clark Kent. Having no other option to rid the world of Zod's tyranny, Clark plunged the dagger into his own abdomen, protecting himself from ascension—and exiling Zod in the process. Though victorious, Clark's win was bittersweet as he plummeted off the building and into the darkness below.
After a fateful kiss, Lois Lane realized that the two men she had been torn between all season—Clark Kent and Metropolis' heroic Blur—were one and the same. Having finally found redemption and a second chance at love, Chloe Sullivan and Oliver Queen, a.k.a. the Green Arrow, were ripped apart. Chloe was forced to painfully listen as the love of her life, Oliver, was abducted by mysterious assailants during his attempt to help Clark defeat Zod's Army. And Tess Mercer, successor to the late Lex Luthor's empire and double agent for the now-defunct government organization Checkmate, was fatally burned at Zod's hand in an attempt to right past wrongs. As Tess flatlined in Metropolis General Hospital, she was visited by a shrouded, elderly woman whose motives are unknown.
Throughout season nine, Clark, bearing the iconic S-shield of his heritage, struggled to find his place between the human world in which he was raised and the Kryptonian world he was born into. Having made peace with his dual heritage, Clark, in season ten, must now find the courage to step out of the shadows and emerge into the light. Never before has there been such a dangerous time for Clark to step into the public eye and take on the mantle of the inspirational icon he is destined to be. As the tide of sentiment in Metropolis turns against heroes, branding them as unchecked vigilantes, our defender of justice will be called upon to re-define what it really means to be a superhero. Given how dangerously close Clark has skirted to crossing the line in the name of "justice" in the past, will he truly earn the right to be the symbol of good for humanity, or will he prove the naysayers right, that no one individual can be judge, jury and enforcer.
In the midst of this turmoil, a new danger will emerge as a dark force takes on many faces, threatening Clark at every turn. Hawkman, Supergirl, and Jonathan Kent, Clark's late, adopted father—forever and always Clark's moral compass, will stand by Clark's side as he takes his final steps toward accepting his birthright. He will need all the help he can get to fight the impending evil onslaught... the greatest darkness ever unleashed on Earth.
The season ten premiere, "Lazarus," opens mere seconds after last season's finale. Clark Kent wakes from his near-death experience, haunted by the ghosts of his past, both friend and foe. Given a new lease on life, Clark must find a way to rid himself of every last temptation, to purge himself of every last shard of doubt in his heart before he can become the beacon of hope the world needs. But a very real threat from Clark's past has returned to challenge his ascent, causing Clark to question the nature of his crusade.
Lois Lane will face her own crisis of meaning, trying to redefine her place in the world now that she knows Clark's super secret—but Clark won't discover that she knows, and that's the way she wants to keep it. Lois will try her best to keep the mild-mannered reporter at arms' length in the hopes that a life free of romantic complication will make him a better hero.
Struggling with her own affairs of the heart, Chloe Sullivan will be faced with an impossible question—how much is she truly willing to sacrifice to protect the people she loves? Chloe will take a tumultuous step into danger for the greater good, the hands of Fate, her only guide.
When Chloe vanishes, Oliver Queen will be forced to look long and hard at the circumstances behind it. Blaming himself for her disappearance, Oliver will begin exploring accountability for all his past actions, good and bad—what great lengths will Oliver go to in order to bring his lost love back home?
Having risked her own life in an attempt to become accountable for her own misguided actions, no one is more surprised than Tess Mercer when she wakes, alive and well, in a seemingly abandoned medical facility. But what secrets lie in wait in the recesses of "Cadmus Labs"? And how much is Tess willing to give up to seize her second chance at redemption?
The Season 10 opening credits for each episode include the following:
The following Recurring Characters appear in more than one episode this season:
- Alexander Luthor/Conner Kent - Jakob Davies (2/22), Connor Stanhope (1/22) and Lucas Grabeel (2/22) 5/22
- Gordon Godfrey - Michael Daingerfield 5/22
- Emil Hamilton - Alessandro Juliani 5/22
- The voice of Jor-El - Terence Stamp 4/22 (One of the 4 was as Jor-El (Earth-2))
- Jonathan Kent - John Schneider 4/22 (One of the 4 was as Jonathan Kent (Earth-2))
- Rick Flag - Ted Whittall 4/22
- Cat Grant - Keri Lynn Pratt 4/22
- Granny Goodness - Christine Willes 4/22
- Desaad - Steve Byers 4/22
- Lionel Luthor (Earth-2) - John Glover 4/22
- Darkseid - Michael Daingerfield (1/22), Steve Byers (1/22) and John Glover (1/22) 3/22
- Jeff Hage - Evan C. Schulte 3/22
- Lieutenant Trotter - Lori Triolo 3/22
- Deadshot - Bradley Stryker 2/22
- Carter Hall - Michael Shanks 2/22
- Kara Kent - Laura Vandervoort 2/22
- Dr. Christina Lamell - Lexa Doig 2/22
- Slade Wilson - Michael Hogan 2/22
- Clark Luthor - Tom Welling 2/22
- Lois Lane (Earth-2) - Erica Durance 2/22
- Courtney Whitmore - Britt Irvin 2/22
- Dinah Lance - Alaina Huffman 2/22
- Martha Kent - Annette O'Toole 2/22
- Chloe's son - Matthias Luers 2/22
The following Recurring Characters appear in only one episode this season but also appear in other seasons:
- Bette Sans Souci - Jessica Parker Kennedy
- Brainiac - James Marsters
- Greg Arkin - Chad Donella
- General Sam Lane - Michael Ironside
- Lucy Lane - Peyton List
- Jor-El - Julian Sands
- Lara-El - Helen Slater
- Shelby - Bud
- Arthur Curry - Alan Ritchson
- Newspaper Stand Worker - Joe Maffei
- Zod - Callum Blue
- Winslow Schott - Chris Gauthier
- Lex Luthor - Michael Rosenbaum
- James Bartholomew Olsen - Aaron Ashmore
- Perry White - Michael McKean (voice only; uncredited)
Although the following characters appeared, they were not portrayed by their regular actors nor were their faces shown and their actors were uncredited.
- Lex Luthor (Lazarus)
- Darkseid (Lazarus, Scion)
- Lionel Luthor (Abandoned)
- Martian Manhunter (Icarus)
- Aquaman (Icarus)
- Impulse (Icarus)
- Zatanna (Icarus)
- Cyborg (Icarus)
- Roulette (Prophecy)
- Metallo (Prophecy)
- Vordigan (Prophecy)
Episode List: 2010-2011
|Lazarus||Writer: Don Whitehead & Holly Henderson||Director: Kevin Fair||September 24, 2010||#197 1001|
|Lois finds Clark's lifeless body and removes the blue kryptonite enabling him to Heal himself. Lois sneaks away before Clark fully awakens in order to protect his secret. Chloe is desperate to find Oliver, so she turns to an unlikely source for answers. Jonathan returns to the Kent Farm with a message for Clark, and Tess awakens in Cadmus Labs.|
|Shield||Writer: Jordan Hawley||Director: Glen Winter||October 01, 2010||#198 1002|
|After Lois departs for Egypt, the Daily Planet hires a new reporter by the name of Cat Grant to take her place. An assassin named Deadshot takes aim at Cat but Clark learns the man has a dangerous agenda that involves the Blur. Carter Hall turns up in Egypt to keep an eye on Lois and he tells Lois about his wife Shayera.|
|Supergirl||Writer: Anne Cofell Saunders||Director: Mairzee Almas||October 8, 2010||#199 1003|
|Clark is stunned when Kara returns to Earth and tells him Jor-El sent her to stop the dark force that is coming because he doesn’t believe Clark can handle it. Meanwhile, Lois confronts Gordon Godfrey, a shock jock radio who has been crusading against heroes, after he threatens the Green Arrow. However, Godfrey is possessed by the dark force and takes Lois hostage. Clark has to come to her rescue.|
|Homecoming||Writer: Brian Peterson & Kelly Souders||Director: Jeannot Szwarc||October 15, 2010||#200 1004|
|Lois convinces Clark to attend their five-year high school reunion. The visit has Clark remembering old times with Lana and Chloe while Lois is furious that no one remembers her five days as a student. Brainiac 5 uses his Legion ring to take Clark through his past, present, and future and shows Clark what really happened the night Jonathan died, Oliver's current pain and Clark's future at the Daily Planet with Lois and his role as Earth's favorite red and blue superhero.|
|Isis||Writer: Genevieve Sparling||Director: James Marshall||October 22, 2010||#201 1005|
|Lois decides to tell Clark she knows he's the Blur, but she accidentally activates an ancient artifact that transforms her into the Goddess Isis, complete with superpowers of her own. Oliver and Clark reluctantly decide to ask Tess for help with Lois. Meanwhile, after Cat Grant witnesses Lois as Isis using her superpowers, she decides Lois is the Blur and sets out to prove it.|
|Harvest||Writer: Al Septien & Turi Meyer||Director: Turi Meyer||October 29, 2010||#202 1006|
|Clark is concerned about Lois' safety so he diverts her away from covering the Vigilante Registration Act by suggesting she cover another story. After he comes clean with her, an angry Lois tells him that she can take care of herself, but when a flat tire strands their car in the middle of nowhere, their plans take a turn for the worse and Lois ends up in serious danger. Meanwhile, Tess searches for a cure for Alexander, who is rapidly aging.|
|Ambush||Writer: Don Whitehead & Holly Henderson||Director: Christopher Petry||November 5, 2010||#203 1007|
|The General and Lucy Lane decide to drop in on Lois and Clark for a surprise Thanksgiving dinner. Clark and the General get off to a rocky start after Lois' father bashes the superheroes and tells Clark he is trying to pass a vigilante registration law. In an effort to stop the vigilante registration act from being passed, Rick Flag lies to Lucy in order to lure Clark away from the farm long enough for him to assassinate the General. Lois is torn between making her father proud and her love for Clark.|
|Abandoned||Writer: Drew Landis & Julia Swift||Director: Kevin Fair||November 12, 2010||#204 1008|
|Lois finds a video made for her by her mother, Ella Lane, before she died and after watching the tape, she makes a drastic decision about her relationship with Clark that takes her to the Fortress, where she comes face to face with Jor-El and Lara. Meanwhile, Tess has a nightmare involving herself as a child and a music box. This led her and Clark to an orphanage run by Granny Goodness who may not have the young girls' best intentions in mind.|
|Patriot||Writer: John Chisholm||Director: Tom Welling||November 19, 2010||#205 1009|
|In an effort to protect the rest of the team, Oliver decides to register for the Vigilante Registration Act to see what the government plans to do with the new law. As he suspected, it was a trap to lure superheroes to an undisclosed location where he is confined to a jail and subjected to a battery of brutal tests under the supervision of Lt. Gen. Slade Wilson. Aquaman and his new wife Mera team up with Clark to free Oliver. Lois is frustrated when Clark continues to push aside her offers to help the team and sets out to prove she can play with the big boys.|
|Luthor||Writer: Bryan Miller||Director: Kelly Souders||December 3, 2010||#206 1010|
|Tess acquires a Kryptonian box that once belonged to Lionel Luthor. When Clark accidentally activates the box, he's transported to a parallel universe where Lionel found Clark in the cornfields instead of the Kents. In this universe, Clark Luthor is a murderer and Lois is engaged to Oliver. Clark must be careful not to tip off Lionel that he's not his son while trying to figure out how to get back to Earth where Clark Luthor was transported in his place.|
|Icarus||Writer: Genevieve Sparling||Director: Mairzee Almas||December 10, 2010||#207 1011|
|The VRA is in full effect and things take an unfortunate turn of events after the Green Arrow tries to stop a mugging but is attacked by citizens for being a super hero. Clark discovers that the civilians who attacked Oliver were all marked with a darkness tattoo. Carter Hall and Stargirl return to help Clark deal with Slade's re-emergence after he kidnaps Lois.|
|Collateral||Writer: Jordan Hawley||Director: Morgan Beggs||February 4, 2011||#208 1012|
|Clark, Oliver, Lois and Dinah are released by the VRA after being captured at Hawkman’s funeral but each of them have flashbacks of Chloe holding them against their will. When Chloe returns, Dinah warns the others that Chloe may now be a traitor. Oliver dismisses her concerns but Clark is unsure if he can trust Chloe after she disappeared without an explanation.|
|Beacon||Writer: Don Whitehead & Holly Henderson||Director: Michael Rohl||February 11, 2011||#209 1013|
|Clark is surprised to see Martha on the news speaking at a pro-vigilante rally. However, surprise quickly turns to horror when he and Lois watch as Martha gets shot on national television. Meanwhile, Lionel reveals himself to the world and reclaims LuthorCorp from Tess and Oliver. Lois and Chloe decide to cheer Clark up by showing him videos from thousands of vigilante supporters professing their support for The Blur.|
|Masquerade||Writer: Bryan Miller||Director: Tim Scanlan||February 18, 2011||#210 1014|
|Chloe and Oliver are mistaken for FBI agents investigating Desaad's recent string of murders and the pair are kidnapped by Desaad's minions. Desaad tries to infect Chloe with the darkness. Meanwhile, Lois tells Clark he needs to be more careful with his identity and suggests a disguise.|
|Fortune||Writer: Anne Cofell Saunders||Director: Christopher Petry||February 25, 2011||#211 1015|
|After Zatanna sends a magically spiked bottle of champagne to Clark and Lois for their bachelor/bachlorette parties, the gang blacks out after the toast and can’t remember anything about the night before. When Lois realizes she lost her engagement ring and drags Oliver back to the Fortune Casino, the two run into the owner Amos Fortune, who accuses them of stealing money from him. Meanwhile, Clark tells Chloe he has a memory of stealing an armored truck the night before.|
|Scion||Writer: Al Septien & Turi Meyer||Director: Al Septien||March 4, 2011||#212 1016|
|Lionel and Tess go head to head in a battle for the Luthor name. Clark and Lois are stunned by Tess' latest present to them.|
|Kent||Writer: Genevieve Sparling, Brian Peterson & Kelly Souders||Director: Jeannot Szwarc||April 15, 2011||#213 1017|
|Clark is shocked to find a mirror box in the barn. Clark Luthor surprises him and sends Clark Kent back to the alternate reality where Clark runs into a very angry Jonathan Kent. Meanwhile, back in our reality, Clark Luthor visits Tess and tells if she doesn’t side with him he’ll kill her. Lois asks Emil to help her bring Clark back.|
|Booster||Writer: Geoff Johns||Director: Tom Welling||April 22, 2011||#214 1018|
|Lois tells Clark it's best to make "Clark Kent" forgettable and awkward so people don’t suspect he’s The Blur. The two are stunned when a fame-hungry superhero from the future, Booster Gold, sweeps into town and begins making saves and posing for press ops, completely winning over the city of Metropolis as the "World’s Greatest Superhero". During one of Booster’s saves, an alien weapon in the form of a scarab fuses itself to a boy named Jaime Reyes. Being unable to control the suit, it starts attacking Metropolis.|
|Dominion||Writer: John Chisholm||Director: Justin Hartley||April 29, 2011||#215 1019|
|Tess learns that General Slade was found unconscious on a street corner, proof that someone has gained access to the Phantom Zone's escape portal and sent him back. Clark decides to return to the exiled land to make sure other phantoms are not fleeing and is furious when Oliver tricks Clark into taking him along. With Clark Kent's powers and abilities|
|Prophecy||Writer: Bryan Miller & Anne Cofell Saunders||Director: Michael Rohl||May 6, 2011||#216 1020|
|Clark takes Lois to the Fortress to get Jor-El blessing for their marriage. Jor-El bestows a unique wedding gift on the couple – he gives Lois Clark’s super powers so she can see what it’s like to be him for a day. Unfortunately, the Toyman has returned to Metropolis, so Lois must go up against the notorious villain instead of Clark. Meanwhile, Oliver searches for the Bow of Orion, which he believes will remove the Omega symbol from his skull, and runs into Kara, who is also on a mission to stop Darkseid.|
|Finale, Part 1||Writer: Al Septien & Turi Meyer||Director: Kevin Fair||May 13, 2011||#217 1021|
|Lois and Clark continue to struggle with the decision of getting married. Meanwhile, Oliver plans to take away Clark's powers forever at his wedding, Clark starts to see Jonathan's ghost. Chloe returns to Smallville, Clark and Lois' wedding is interrupted by a dangerous evil, and Tess discovers Apokolips is heading for Earth. Part 1 of a two hour Series Finale|
|Finale, Part 2||Writer: Brian Peterson & Kelly Souders||Director: Greg Beeman||May 13, 2011||#218 1022|
|Tess is kidnapped by Lionel, who wants to take her heart in order to revive Lex. Oliver battles Darkseid's minions. Tess makes a sacrifice for the greater good, Lionel is possesed by Darkseid and Clark finally embraces his destiny. Part 2 of a two hour Series Finale|
- Tom Welling (Clark Kent), Erica Durance (Lois Lane), Cassidy Freeman (Tess Mercer), and Justin Hartley (Oliver Queen), signed to return for the final season. Smallville veteran Allison Mack (Chloe Sullivan) agreed to return for seven episodes and is listed as a series regular in the episodes she appears and was given the honorary "and" credit that was used on John Schneider (Jonathan Kent) from Season One to Season Five, Annette O'Toole (Martha Kent) during Season Six and John Glover (Lionel Luthor) during Season Seven. 
- Tom Welling and Allison Mack are the only actors that have appeared in every season; Welling is the only actor to appear in every episode throughout the series' ten year run.
- Allison Mack appears in Lazarus, Shield, Supergirl, Homecoming, Icarus, Collateral, Beacon, Masquerade, Fortune, Finale, Part 1 and Finale, Part 2. Her appearance in Homecoming is via stock footage of the pilot while Supergirl and Icarus contain scenes that were edited out of the season premiere Lazarus. Her appearance in Shield is via a never-before-seen photo of her.
- This season is the smallest cast in the show's history as the episodes without Allison Mack are half the original size of the cast when the show began.
- For the first time, Erica Durance appeared in every episode of the season. Also the nineteenth episode Dominion marked her 100th appearance as Lois Lane in the series.
- Although Callum Blue stated that his contract signed him for a two year long story arc, his character Major Zod was sent to New Krypton in the Season Nine's finale and did not return as part of the main cast. However, he reprised his role in the nineteenth episode Dominion.
- This is only the second season (after Season One) where there aren't any villains in the main cast as there were main cast villains in the interim eight seasons.
- Producers expressed their interest in bringing back Michael Rosenbaum for at least nine episodes of season 10; initially, the actor officially announced that he would not be returning as a regular for season 10 on his Twitter account. However, Rosenbaum later reprised his role as Lex Luthor in Finale, Part 2.
- John Schneider returned as Jonathan Kent for the season premiere Lazarus (as a spirit), the seventeenth episode Kent (in the form of his Earth-2 doppelganger) and the Finale's Part 1 and Part 2 as well (again as a spirit).
- Laura Vandervoort reprised her role as Kara Kent in the episodes Supergirl and Prophecy.
- Michael Shanks reprised his role as Carter Hall in the episodes Shield and Icarus in which his character dies.
- James Marsters reprised his role as Brainiac in the form of Brainiac 5 in the 200th episode Homecoming.
- John Glover returned as Lionel Luthor in the form of his Earth-2 doppelganger in Luthor, Beacon, Scion and Finale, Part 2.
- Jessica Parker Kennedy reprised her role as Plastique as a member of the Suicide Squad in Shield.
- Michael Ironside and Peyton List, who play Sam Lane and Lucy Lane respectively, returned to reprise their roles in the seventh episode Ambush.
- Julian Sands and Helen Slater reprised their roles as Jor-El and Lara-El respectively in Abandoned.
- Darkseid's minions: Desaad, Gordon Godfrey, Granny Goodness and Mad Harriet are portrayed by Steve Byers, Michael Daingerfield, Christine Willes and Lindsay Hartley respectively over the course of the season.
- Alan Ritchson returned to reprise his role as Justice League member Arthur Curry in the ninth episode Patriot. In addition, Elena Satine was cast as Mera (Curry's wife).
- Teri Hatcher, who played Lois Lane in Lois & Clark: The New Adventures of Superman, portrayed Ella Lane (Lois's mother) in the eighth episode Abandoned.
- Battlestar Galactica alum Michael Hogan took on the role of Slade Wilson in two episodes Patriot and Icarus.
- Alaina Huffman reprised her role as Dinah Lance by making a cameo appearance in Icarus and a full appearance in Collateral.
- Britt Irvin reprises her role as Courtney Whitmore in Icarus and Prophecy.
- Annette O'Toole returned as Martha Kent in the thirteenth episode Beacon as well as Finale, Part 1.
- This season introduced Alexander Luthor/Conner Kent (the genetic clone of Clark Kent and Lex Luthor) portrayed by Jacob Davies as a "6-year-old" in Lazarus and Isis, Connor Stanhope (Lex Luthor's adolescent actor in Season Seven and Season Eight) as a "12-year-old" in Harvest, and Lucas Grabeel (Lex Luthor's teenage actor in Season Six) as a "teenager" in Beacon and Scion.
- Kristin Kreuk did not return to reprise her role as Lana Lang but did appear in flashbacks in Homecoming and Finale, Part 2.
- There are five former main cast members that did not make any appearances in the final season. They are: Kristin Kreuk (Lana Lang), Sam Jones III (Pete Ross), Eric Johnson (Whitney Fordman), Jensen Ackles (Jason Teague) and Sam Witwer (Davis Bloome).
- Aaron Ashmore returned for Finale, Part 2 but this time portrayed James Bartholomew Olsen, the brother of his original character Henry James Olsen.
- This season was the final season of Smallville.
- Tom Welling has become a full Executive Producer of the show along with showrunners Kelly Souders and Brian Peterson, longtime series director James Marshall, and Tollin/Robbins production team of Mike Tollin, Brian Robbins and Joe Davola.
- With this season, Smallville beat the Guinness World Record for the longest successive running US Sci-Fi TV series when the 215th episode Dominion aired. This is the second Guinness World record for Smallville as Tom Welling currently holds the World Record for being the actor that has played Clark Kent/Superman for the longest continuous period.
- Season Ten featured the 200th episode of the show (the fourth episode of the season), Homecoming, and by the series finale, it totalled 218 episodes and 216 broadcasts due to both parts of Absolute Justice and Finale being broadcast together.
- Justin Hartley directed one episode this season: Dominion.
- Geoff Johns wrote an episode for the third year in a row this season: Booster.
- Tom Welling directed two episodes in the final season: Patriot and Booster.
- Clark Kent, Chloe Sullivan, Lex Luthor, Martha Kent, Jonathan Kent, Lionel Luthor and Greg Arkin are the only characters to appear in both the first and last seasons of Smallville.
- Season 10 beat Season 9's record of number of new DC characters introduced (note that Season 9 beat Season 8 and that Season 8 beat all seasons before it in this regard). There are twenty seven DC Comics characters that appear for the first time in this season: Darkseid, Rick Flag, Cat Grant, Deadshot, Shayera Hall, Gordon Godfrey, Desaad, Granny Goodness, Brainiac 5, Emil LaSalle, Ella Lane, Mad Harriet, Mera, Slade Wilson, Adrianna Tomaz, Isis, Ultraman, Alexander Luthor/Conner Kent, Amos Fortune, Ted Kord, Jaime Reyes, Ron Troupe, Skeets, Booster Gold, Solomon Grundy, Captain Cold and Black Manta. Orion was also mentioned.
- Season 10 had a continuing theme of bringing back former regular cast members and guest stars, including Jonathan Kent, Martha Kent, Kara Kent, Lionel Luthor, Brainiac, Carter Hall/Hawkman, Emil Hamilton, Jeff Hage, Lucy Lane, Sam Lane, Bette Sans Souci, Shelby, Aquaman, Greg Arkin, Black Canary, Stargirl, Jor-El, Lara-El, General Zod/Major Zod, Toyman, Lex Luthor, and Jimmy Olsen. Impulse, Cyborg, Martian Manhunter, Zatanna, Metallo, Roulette, and Dark Archer have only a cameo appearance. In addition Perry White was only heard but did not have a full screen appearance.
- This season had the most characters that have starred in previous seasons return. 
- This is the final season to introduce a new type of kryptonite. Gold kryptonite made its first appearance in Prophecy.
- Clark Kent and Chloe Sullivan are the only main characters to appear in every season of the series.
- The suit used in Superman Returns was featured in Lazarus, the Season premiere.
- This season saw the destruction of two locations used from Season 1: the Talon and the Luthor Mansion.
- The Series finale was a two-hour special.
|Season Ten in Smallville|
|Seasons in Smallville|
- ↑ Includes his uncredited voiceover in Shield as well
- ↑ Al Septien Confirms Writing Episode 10.16 Twitter
- ↑ Erica Durance told TVGuide.com that her contract ran through Season 10. TVGuide
- ↑ Cassidy Freeman said that her contract runs three years. TVGuide
- ↑ Justin Hartley said he would return if the show wants him back. TVGuide
- ↑ Callum Blue stated in a interview that his contract signed him for two years.IESB.net
- ↑ http://www.tvline.com/2011/02/smallville-michael-rosenbaum-back-for-series-finale/
- ↑ Smallville: An Original Cast Member Returns TV.IGN.com
- ↑ http://www.tvguide.com/News/Smallville-Michael-Ironside-1021736.aspx
- ↑ "The CW Announces 2010-2011 Schedule", dated May 20, 2010. CWtv.com
- ↑ KryptonSite News: 'So When Is Geoff Johns' Next Episode On The Schedule?', dated October 25, 2010. KryptonSite
- ↑ http://dccomics.com/dcu/downloads/videobox.php?f=/media/_dcu/audio_video/Smallville-480x270.mov&width=521&w=496&height=311&h=286