The Vampire Diaries - - Nina Dobrev : Elena Gilbert / Katherine Peirce Paul Wesley : Stefan Salvatore Ian Somerhalder : Damon Salvatore Steven R. McQueen : Jeremy Gilbert Sara Canning : Jenna Sommers Katerina Graham : Bonnie Bennett Candice Accola : Caroline Forbes Zach Roerig : Matt Donovan Michael Trevino : Tyler Lockwood Kayla Ewell : Vicki Donovan (ep. 1-7) Matt Davis : Alaric Saltzman (ep. 9+)