|Occupation||Member of the The Legion|
| Powers and|
|Played By||Ryan Kennedy|
- "Kal-El, your influence will reach far beyond earth." - Rokk to Clark, Legion
Rokk Krinn is a humanoid alien from an unknown planet.
He is of average weight and compared to his Legion colleagues, is of moderate height. He has olive colored eyes and slight facial hair. When we first see Rokk, he had medium length dark brown hair but when he returned in Doomsday, his hair was shorter.
In Legion and Doomsday, Rokk was seen wearing his Legion outfit which consists of a black jacket with silver, metallic circles on it that represent his power of magnetism, with a purple shirt underneath and black pants.
As leader of the Legion, Rokk is the most serious-minded and dedicated member of the three Founders. He is quick to come up with plans and issue orders, and seem naturally comfortable making the harder decisions that most people would refuse to make. He does however initially lack the moral code that Clark Kent has, feeling no issue in killing Chloe Sullivan in order to destroy Brainiac. Rokk however means well, and despite his cold personality, is in utter awe of Clark Kent, not only as a hero, but just as a person who will not give up on his friends for everything. As a result, Rokk realizes that killing is never the answer and makes it one of the main policies of the Legion.
Powers and AbilitiesEdit
Rokk has the ability to manipulate magnetic forces around him, enabling him to create force fields and is able to control and summon all metal objects that are magnetic.
- Magnetokinesis: Rokk can manipulate and control metal objects just by thinking. He seems to have fully mastered this ability, as he was able to summon the Persuader's Atomic Axe from his hands to his own with ease and was able to carefully extract all of Brainiac's nanites out of Chloe Sullivan via her mouth without removing her other need nutrient trace metals. He was also able to use his own powers together with Garth's to create an electromagnetic pulse that temporarily took Brainiac offline.
- Flight: While wearing his Legion Ring, he also has the controlled ability to fly at will.
- "Tomorrow is the day you die." Rokk to Clark Kent, Doomsday
Along with fellow founding Legion members Garth Ranzz and Imra Ardeen, Rokk traveled through time back to the 21st century to stop the Persuader from killing Kal-El aka Clark Kent and altering history. They found him to at Clark's barn where he had just returned from seeing Jimmy off to Star City. After the Persuader cut his abdomen, Rokk took away his atomic axe using his ability of magnetism and Imra distracted him using telepathy enough so that Garth could knock him out using his electricity. Once unconscious, Rokk took away the Persuader's stolen Legion ring, sending him back to the 31st century to be contained. Rokk, Garth and Imra then introduced themselves to Clark as the Legion of Super-Heroes.
The three explained to Clark what he is truly destined to be, which is a model for all of the galaxy for aliens to come to earth and live among humans. Rokk learned that the Persuader did not just come to kill Kal-El, but to destroy the Phantom Zone Crystal, the Martian Crystal belonging to Martian Manhunter, to prevent the destruction of Brainiac and thus destroying the future since that was how Clark defeated Brainiac in the future. The three Legion members decided to help Clark defeat Brainiac since history is different now, and they were willing to stop Brainiac at all costs even if it meant killing its human host: Chloe Sullivan.Clark initially refused their help since they're willing to kill a human being to stop Brainiac. After managing to stun Brainiac as it was trying to drain knowledge from the human race through computers, Garth tried to take on the responsibility to stop Brainiac, but Rokk wanted to do it instead, seeing that Garth was not up to murdering someone.
Finally working together after Clark stopped Rokk's attempt at killing Chloe/Brainiac, Clark and Imra were holding Brainiac down and making contact with Chloe from within, while Rokk and Garth managed to electrically and magnetically extract the nanites of Brainiac from her. As they did, the particles had formed a sphere and disabled Brainiac for good. Rokk, Garth, and Imra returned to the future with what was left of Brainiac to be reprogrammed into something useful, but not before Rokk warned Clark to be careful of the days ahead.
Returning from the future to the 21st century once again, Rokk goes to the Daily Planet rooftop to meet Clark and told him that by saving Chloe from Brainiac, he saved her connection to Doomsday and that Chloe is the reason that Doomsday cannot be defeated now since she made him immune to kryptonite when she tried to kill him with it and she stopped Clark from sending Doomsday to the Phantom Zone at the Fortress of Solitude with the Black crystal.
Clark states that he wouldn't change his decision on saving Chloe no matter what happened and then Rokk tells Clark that tomorrow is the day he'll die if he goes up against Doomsday alone. He gives Clark another Legion ring since his old one got destroyed a while ago and suggests that Clark send Doomsday to the future to fight The Legion since nothing on the planet can stop him from killing Clark, then he returns to the future when Clark refuses to accept his help, stating that this is his problem, not the Legion's and that he will embrace his destiny, even if it means that he'll have to die to do it.
Rokk and Imra disguised in Kryptonian clothing infiltrate New Krypton and encounter Earth Gov agents attempting to cause trouble on New Krypton. However they disarm them and only to draw the attention of elite security who surround them believing the Legion to be in league with Earth Gov. Superman and Supergirl arrive on the scene.
In the ComicsEdit
Over the years there have been three primary versions of the Legion of Superheroes, but in all three Rokk Krinn, Garth Ranzz and Imra Ardeen are the founding members. Rokk's personality as the level-headed Leader of the group remains a constant in all versions of the Legion. In the original and current versions of the Legion Rokk, along with Garh and Imra, recruited Clark Kent (Superboy) as a member of their group. Rokk maintains a serious attitude and a strong sense of duty, and is implied in the current continuity to have inspired Clark's leadership in his adult life. Rokk's brother Pol was a Legion member called Magnetic Kid who died in a Legion adventure called "Magic Wars" at the end of the first continuity. Although, in the original Legion, Rokk had a romantic relationship with Night Girl and even had a child with her (named Pol after his brother), their relationship never came full circle like the original Legion history. Despite being Legion leader in the late eighties history of the Legion, he was destined to one day become one of the Legion's greatest enemies, The Time Trapper. Rokk considers Garth and Imra two of his best friends in the Legion. Aside from Cosmic Boy, Rokk briefly went by Polestar. Rokk's powers are a result from the planet of Braal that leaves most of its people with magnetism manipulation abilities.
- Rokk is never referred to by his comicbook superhero name, Cosmic Boy, in Legion, though Garth does call him "Cos" in the episode.