[1][3] As a metahuman, Painkiller exhibits superhuman strength and can induce anesthetization on any part of the human body, thus dulling the senses of his victims.

[4] Introduced as a civilian in the first season, this version is Khalil Payne, a high school track star and boyfriend of Jennifer Pierce from Freeland who intends to go to college and eventually join the Olympics, but is left paralyzed after getting caught in the crossfire of the 100's attack on a peace march against them.

Embittered and depressed, he breaks up with Jennifer, drops out of school, and is convinced by the 100's leader Tobias Whale into working for him as his right hand in exchange for the ability to walk.

Though they later return in exchange for Khalil receiving police protection, Whale gets ahold of him and rips out his spinal implant, eventually killing him, before the A.S.A.

In the fourth season, Khalil began operating in Akashic Valley, having reached an agreement with Painkiller, before returning to Freeland to help Jennifer and her family apprehend Looker and kill Ishmael.