Because you like Banjo in Banjo-Kazooie

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.

Knuckles the Echidna is a 16-year-old red echidna (aka a spiny anteater) and guardian of the ancient Master Emerald. See them in Sonic the Hedgehog.

Barry Egan has too many anger issues to list here. See them in Punch Drunk Love.

Born and raised in the darkness, Bane is determined to have the city totally under his control so that he can demolish it. See them in DC Extended Universe.

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.

Leatherface's moods change with his masks. See them in The Texas Chainsaw Massacre.

Ultron is security software turned evil mastermind. See them in Marvel Cinematic Universe.

Count Olaf is a traveling actor, except he can't act and his homicidal tendencies make finding work pretty difficult. See them in Lemony Snicket's A Series of Unfortunate Events.

Rayman is a fearless hero who flies into action with a propeller on his head and a smile on his face. See them in Rayman.

Keeping your cool is just as useful in the underworld as in war, and Michael Corleone is stone-cold. See them in The Godfather.