Charles Bartholomew "Chuck" Bass is a fictional character in the Gossip Girl series of teen novels and the television series of the same name. He is portrayed by English actor Ed Westwick. Although he is a secondary, antagonistic character in the original book series, in the television series Chuck is one of the main characters, serving as the show's antihero. The television series character is noted for his financial ambition and personal style. Since they were children, Chuck has been best friends with Nate Archibald, Serena van der Woodsen, and Blair Waldorf, who were boyfriend and girlfriend in the past. In the TV series, he is the adoptive brother of Serena and Eric van der Woodsen and step-brother of Jenny and Dan Humphrey.