Juliet van Heusen is a vampire in the show Wizards of Waverly Place .
`` Justin 's best friend , Zeke Beakerman ( Dan Benson ) , also finds out in Season 4 's episode `` '' Zeke Finds Out '' '' , along with Alex 's boyfriend , Mason Greyback ( Gregg Sulkin ) , who is a werewolf and Justin 's girlfriend , Juliet van Heusen ( Bridgit Mendler ) .  ''
Wizards of Waverly Place