Josh Gad: Josh Gad. Actor: Frozen. Josh Gad is an American actor and singer who is well-known for voicing Olaf the Snowman in Disney's Frozen franchise. He was also in Beauty and the Beast as LeFou, Ghostbusters: Afterlife as Muncher, The Wedding Ringer, Ice Age: Continental Drift, Pixels, The Internship, The Rocker, 21 and The Angry Birds Movie 1 and 2.