Because you like Bubbles in Trailer Park Boys
A short-tempered guy, Bowser is determined to wreak havoc on the Mushroom Kingdom. See them in Super Mario Bros..
Brian Griffin is the most scholarly member of the family—when he's not drunk on martinis. See them in Family Guy.
Thanos is an intergalactic warlord, on the hunt for infinite power. See them in Marvel Cinematic Universe.
Serena van der Woodsen is a wild child. Too wild, her friends and family might argue. See them in Gossip Girl.
Most of the world has been wiped out from The Beast. And when The Beast comes, Cole MacGrath will be ready. See them in inFAMOUS.
Stan Marsh is a fourth grader who is the ladies man of his classroom. See them in South Park.
Randy Marsh is a geologist and Nobel Prize winner who is into binge drinking, starting riots, the Food Network, and P.F. Changs. See them in South Park.
Don't ask the ruthless queen of the Tokyo underworld any questions unless you're fine with losing a limb. See them in Kill Bill vol. 1.
V is a violent anarchist with literally nothing left to lose. But, he might have a point. See them in V for Vendetta.
The vampire that killed Zero Kiryu's family also infected him, and he starts to crave blood, much to his horror. See them in Vampire Knight.
Catherine Linton was once spontaneous and rowdy but ever since marrying the wealthy Edgar, she has morphed into a boiling pot of emotional outbursts. See them in Wuthering Heights.