From publisher blurb:
Doctor Killjoy is obsessed with hatred for all superheroes. He wields a surgical scalpel with murderous skill, and travels with a handgun-wielding teenager who goes by the name of Spoilsport. Killjoy believes that super-heroes do more harm than good. He and his companion were first encountered in Malaia during an uprising in that troubled African nation. The CrimeTech criminal syndicate sometimes employs Killjoy as a physician.
"FOE FILE #07: DOCTOR KILLJOY" contains a briefing from TEACHER, the sentient computer system of the Crusader Citadel (headquarters of the Crusaders superhero team), color character sheets with complete stats for Dr. Killjoy and Spoilsport in V&VTM 2.1 and 3.0/MIGHTY PROTECTORSTM, background, tactics, personality traits, and choice dialogue!