Because you like Grunkle Stan in Gravity Falls
Victor Frankenstein can create life, so he's pretty awesome if he says so himself. See them in Frankenstein.
Tom Haverford is set on being a world-renowned entrepreneur who dates models. Problem is, he's stuck in Indiana with a lazy business partner. See them in Parks and Recreation.
Javert is an inspector with a single-minded focus: to bring criminals to justice. See them in Les Miserables.
Milo Thatch is an enthusiastic researcher without cynicism. See them in Atlantis: The Lost Empire.
A smart, spunky, and incredibly skilled gamer, Art3mis has a revolutionary spirit. See them in Ready Player One.
Don't ask Rosa Diaz, a Brooklyn detective, to lighten up. Actually, to be safe, don't ask her to do anything! See them in Brooklyn Nine-Nine.
Will Turner is an earnest, lovelorn blacksmith's assistant with an adventurous spirit. See them in Pirates of the Caribbean: the Curse of the Black Pearl.
Harry Osborn is the privileged son of Oscorp's founder with a goblin-sized chip on his shoulder. See them in Marvel Cinematic Universe.
Angela Martin is uptight and puritanical, outside of the affair she's having with a co-worker. See them in The Office.
Leonard Hofstadter is the normal one among his scientist friends, though in fairness that's a low bar. See them in The Big Bang Theory.