Jason Blossom is a recurring character on Riverdale. He is portrayed by Trevor Stines. Jason was the son of Clifford and Penelope Blossom, as well as the twin brother of Cheryl Blossom. He was captain of the school water polo team and a member of the Riverdale Bulldogs. He supposedly died under mysterious circumstances when he fell from a boat into Sweetwater River on July 4th, prior to the start of the series but as it turns out he died a week later around July 11th.