Because you like Duke Nukem in Duke Nukem
A jealous woman is dangerous. A jealous assassin woman like Elle Driver is even more so. See them in Kill Bill vol. 1.
Jack Bauer is a terrorist fighter who is scared of nothing and no one. The clock is ticking! See them in 24.
Darcy Lewis is a razor-sharp scientist studying things that science can't explain. See them in Thor.
Hank McCoy is a quintessential nerdy scientist but with a few rather unconventional physical attributes. See them in X-Men Series.
They say they saved Adam Jensen by turning him into a cyborg, but he's not sure saved is the right word. See them in Deus Ex Series.
An aristocrat-turned-tomb-raider, Lara Croft does her best thinking while plunging off cliffs. See them in Lara Croft: Tomb Raider.
Wanderer is a Soul, a parasite sent into a host to take over their body, extracting information from them and colonizing their species. See them in The Host.
This barber doesn't cut hair. Sweeney Todd sends his clients down a chute to be baked into his partner-in-crime's pies. See them in Sweeney Todd: The Demon Barber of Fleet Street.
Phoenix Wright is an easygoing defense attorney who is rarely defensive. See them in Ace Attorney Series .
Jin Kazama is a fearsome warrior torn between the darkness and the light. See them in Tekken .
Ultron is security software turned evil mastermind. See them in Marvel Cinematic Universe.