The Mutant Wave: The Mutant Suppression Program
Ruby is a red-haired hot-tempered radical mutant activist following Opal loyally. She has no reservations about violence or killing, but never against fellow mutants; only to defend her own or Opal’s life.
Ruby belonged to the mutant activist (some would say terrorist) group called Apocalypse before it was destroyed by government sanctioned mutants, and she left with Opal. She has quite the public record and has been in prison a few times over, never serving full sentence, and is wanted just about everywhere.
Nicknamed “The Red Death” in government files, Ruby can drain or fully shut down an area of fire or electricity, or drain heat from any object or creature by touch. Although that is probably not her only powers.