|Family||Evan Gallagher (son, deceased)|
|Occupation||Student (Smallville High School)|
| Powers and|
|Played By||Pascale Hutton|
Powers and Abilities
- Electricity energy absorption: Karen was able to absorb electrical energy.
When she got pregnant at a party, the baby grew rapidly and her pregnancy went to full term in one week. When she was about to give birth, the father of the child, Tanner Sutherland, abandoned her and she was vaporized in the car leaving the baby unscathed.
Clark Kent and Lana Lang found the baby in Evan's Field and named him Evan. They took care of him but quickly realized that he was aging at a dangerously rapid rate. They discovered Karen Gallagher's identity in an attempt to save Evan from dying.