Because you like John McClane in Die Hard

Chanel Oberlin is a big fan of herself, and she can't see why anyone else wouldn't be too. See them in Scream Queens.

An ironic hipster with a healthy dose of self-deprecation, Dave strives to be cool at all costs. See them in Homestuck.

Sid Jenkins is the ultimate underachiever, but he doesn't mind. Well, he pretends he doesn't. See them in Skins.

What Mako Mankanshoku lacks in common sense, she makes up for in sheer optimism and force of personality. See them in Kill la Kill.

Maddy Perez seems like an angel until she opens her mouth. See them in Euphoria.

While Cassie Ainsworth's head is always in the clouds, her heart is always in the right place. See them in Skins.

A crabby troll, Karkat Vantas is perpetually angry about his lot in life. See them in Homestuck.