John Gegenhuber is an American actor and voice actor. Since 2013, he has been the voice of Cap'n Crunch. Raised in Palatine, Illinois, his earliest screen-acting credit was in the 1986 PBS telefilm Under the Biltmore Clock. He has starred in several series, as well as appeared as a guest or recurring character on numerous shows, including Seinfeld (1993), Murphy Brown (1994), Star Trek: Voyager (1995-1996), Mad About You (1997), Law & Order (1997) and Seven Days (1999). He was one of the stars of the NBC series Earth 2 (1994-1995). He also appeared in the movies Straight Talk (1992) and Rookie of the Year (1993), and video games like Lego Dimensions (2015).
In 2006, Gegenhuber wrote, directed and starred in The Perverts. The pilot was entered in the 2006 ITVFest (Independent Television Festival) where Gegenhuber won the Best Directing Award.