Because you like John Blutarsky in Animal House
Kenzo Tenma would have never guessed that ten-year-old he saved would later become a deadly serial killer intent on "thanking" him. See them in Monster (TV Show).
Formerly a "sweater-set-wearing, mojito-drinking sorority girl", Paige Collins is now a successful sculptor with slight memory loss. See them in The Vow.
Emma Woodhouse knows what's best for everyone else. Just don't try to tell her what to do. See them in Emma.
People think Karen Smith is a dumb blonde, but she disagrees and is proud she can predict the weather with her breasts. See them in Mean Girls.
It turns out breaking open an ancient cursed statue will do funny things to a girl like Enchantress. See them in Suicide Squad.
A deadbeat dad and small-time con-artist, Frank Gallagher gives nothing and yet expects everything. See them in Shameless.
Mother Gothel is a great mother as long as you never, ever, break the rules. See them in Tangled.
Konata Izumi has a live-now, worry-later view of the world. See them in Lucky Star.
Aslan represents everything good and just, he's just not super reliable. See them in The Chronicles of Narnia.