Role in the filmEdit
He is only seen on his laptop video chatting with Beth and plans on smoking his Christmas bong with her, indicating that he's a stoner. However, Beth claims she's stuck at her house, although Derek lives four miles away. He gets worried when he hears Howard's truck almost making an earthquake. He is never seen again.
Derek's fate is unknown but however, his house was destroyed by Krampus and it's implied that he was killed off-screen. It is possible that he was taken by the gingerbread men given that one was found stabbed against his refrigerator.