Based on the Alloy novels, WBTV's "The Vampire Diaries" centers on Elena (Nina Dobrev), a tragic heroine who is the object of passion for two vampire brothers, Stefan (Paul Wesley) and Damon (Ian Somerhalder).
These are all shows where character have been introduced as bad/mean/troublesome ones that you automatically hate but though time have become some of my favorite characters because of redemption or having gained my sympathy. This is mostly focusing on characters out side of the main ones.