Ben 10: Alien Swarm is a 2009 American science fiction film directed by Alex Winter and written by John Turman-James Krieg. It is based on the Cartoon Network's animated series Ben 10: Alien Force and is a standalone sequel to 2007 film Ben 10: Race Against Time. It stars Ryan Kelley, Galadriel Stineman, Nathan Keyes, Alyssa Diaz, Herbert Siguenza, and Barry Corbin. The film's events take place between the second season's finale and the first episode of the third season of Ben 10: Alien Force.

Alexander Ross Winter is a British and American actor. He played the slacker Bill S. Preston Esq. in the 1989 film Bill & Ted's Excellent Adventure and its sequels Bill & Ted's Bogus Journey (1991) and Bill & Ted Face the Music (2020). He is also known for his role as Marko in the 1987 vampire film The Lost Boys; for co-writing, co-directing, and starring in the 1993 film Freaked; and for directing documentaries in the 2010s.