Because you like Steven Hiller in Independence Day
Don't tell anyone Kate Austen was under arrest when the plane crashed. See them in Lost.
Ursula will oh-so-generously grant your wishes for a price. See them in The Little Mermaid.
Harrison Wells is a brilliant scientist full of secrets. See them in DC Extended Universe.
Sideshow Bob is a bitter ex-performer who was forced to do inhumane stunts for slapstick comedy. Now he's exacting revenge on his former boss, a clown. See them in The Simpsons.
Frodo might have carried the ring, but Samwise Gamgee carried the ring bearer. See them in The Lord of the Rings.
James Wilson is a compassionate doctor who willingly plays the sidekick. See them in House M.D..
Wheatley's got an endless supply of bad ideas that he wants to share. See them in Portal Series.
Egon Spengler prefers collecting spores, molds, and fungus to interacting with people. See them in Ghostbusters.
Point the fun-loving Pippin Took towards second breakfast, and he's one happy hobbit. See them in The Lord of the Rings.