Ian Somerhalder, Cassidy Freeman
Smallville fans: Meet the vampire version of Tess Mercer.
Cassidy Freeman, who portrayed the fearless illegitimate daughter of Lionel Luthor on the CW superhero drama, will make her first appearance on Thursday's episode of The Vampire Diaries, in which she plays a ruthless and seductive vampire who was something of a mentor to a younger Damon (Ian Somerhalder). Before the "Delena" fans start to worry, know this: Sage has her eye on another vampire who's a bit more powerful. TVGuide.com caught up with Freeman to get the scoop on her Diaries debut.
Caspar Zafer, Nathaniel Buzolic
Get ready to meet Klaus' other Original brothers on The Vampire Diaries.