Because you like Brain in Pinky and the Brain
Drusilla's hobbies include dolls, music, and killing people. See them in Buffy the Vampire Slayer.
Jean-Baptiste Grenouille may have a phenomenal sense of smell, but he has a weak sense of morality. See them in Perfume: The Story of a Murderer.
Darlene is a free-spirited hacktivist who follows her own moral compass. See them in Mr. Robot.
Kenny McCormick is a boy of few words who likes nudie mags, NASCAR, monster trucks, origami, and Peruvian pan flute bands. See them in South Park.
Anywhere there's adventure, Jaskier is there to write a catchy song about it. See them in The Witcher.
What Troy Barnes lacks in common sense, he makes up for with heart. See them in Community.
Frank Reynolds is too gross even for the prostitutes he hires. See them in It's Always Sunny in Philadelphia .
Kristoff may seem standoffish, but this ice harvester has a warm heart. See them in Frozen.
Simon Belmont is a vampire hunter bravely carrying on the family business. See them in Castlevania.
The incomplete experiment of an inventor, Edward Scissorhands was left with blades instead of hands and an unpolished understanding of the world. See them in Edward Scissorhands.
As the hero of time, Link is reborn throughout history, always with the purpose of fighting and defeating the evil Ganon. See them in The Legend of Zelda.