Raistlin Majere
A character in the Dragonlance series of books, Raistlin Majere holds roles of varying importance. Eventually, the powerful wizard engages in an enterprise that would challenge the very gods.
He has a twin brother named Caramon. Not unlike Cameron Dias, he is the polar opposite of Raistlin, read: ditz; moreover, he is a staunch fighter. This makes them the perfect pair, akin to nuts and gum. When Raist isn't acting like the quintessential Just_as_planned, he condescends to his big brother, who has yet to figure out if he's a boy or a girl, let alone take the time to appreciate that his brother despises him.
Instead of listing which dragonlance novels he appears in, its easier to list which ones he hasn't been in: Legend of Huma (the gayest name for a hero, fuck, must have been named after Margret Weiss' gerbil) Tazman the Minodevil. Tanis and the quest for his black eye-liner Tanis and the quest for his Projekt mixtape. Palladium's quest to find the secret garden of the Kender and drop a 50-megaton warhead on it. The Where's Waldo book: Find Sturm Brightblade or any Solomnac Knights for that matter. And the choose your own adventure book: Tasselhoff Burrfoot and the case of the stolen *insert*