Celebrity Arnold Schwarzenegger and Lookalike Son Joseph Baena Enjoy Bike Ride Together in Venice The father-son pair often enjoy going to the gym together By Karen Mizoguchi Published on July 14, 2016 12:50 AM Share Tweet Pin Email Photo: Coleman-Rayner Aside from being spitting images of each other, Arnold Schwarzenegger and son Joseph Baena are a tandem duo. The father-son pair were spotted enjoying a bike ride in Venice, California on Wednesday. Schwarzenegger, 68, and Baena, 18, were all smiles as they rode their own two-wheelers in their casual T-shirts and shorts. They were seen outside Gold’s Gym where they often work out together. Joseph is the son of Mildred Baena, Schwarzenegger’s former housekeeper who he had an affair with when married to ex-wife Maria Shriver. RELATED VIDEO: Have You Ever Wanted to Own Arnold Schwarzenegger’s Truck? The actor also has four children with Shriver: Katherine, 26, Christina, 24, Patrick, 22, and Christopher, 18.