Because you like Phoebe Halliwell in Charmed
Don't worry about this forensic scientist offing you unless you're a serial killer yourself. (You're not, right? Just checking.) See them in Dexter.
Ratchet is a shoot-first, ask-questions-later, and then-shoot-again kind of lombax. See them in Ratchet & Clank.
Quentin has his whole life mapped out. It might sound boring, but he likes boring. See them in Paper Towns.
Saul Goodman can get just about any lying crook off the hook in court. Well, as long as he can make a buck out of it. See them in Breaking Bad.
Handsome Jack is wearing a mask of his own face to hide his scarred real one. See them in Borderlands Series.
M. Bison is a diabolical megalomaniac hell-bent on dominating the world. See them in Street Fighter.
Ace pilot Asuka Langley Soryu is confident, haughty, and a little less grown-up than she pretends to be. See them in Neon Genesis Evangelion.
This metal-bending mutant may be misaligned with the genetically normal people of the world, but Magneto's got class for days. See them in X-Men Series.
A believer in the pursuit of justice, Garrus Vakarian hates it when bad guys slip through the cracks of the bureaucratic justice system. See them in Mass Effect.
It's certainly easier to get great footage of crimes when you can guarantee they'll happen. See them in Nightcrawler.
After Rintarou Okabe develops the Phone Microwave, some of his fantasies start to seem uncomfortably real. See them in Steins;Gate.
Javert is an inspector with a single-minded focus: to bring criminals to justice. See them in Les Miserables.