Mason Greyback is a character and Alex Russo's love interest from Wizards of Waverly Place. He is played by Greg Sulkin. Mason was a transfer student from England, who fell in love with Alex. They date, and Alex later finds out he is a werewolf. Wanting to help her brother Justin find his girlfriend, he sniffs her dental floss. It brings them all the way to Transylvania, and his past is revealed when Juliet announces they used to date. Mason blurts out that he still loves her, and Alex transports home with her heart broken.