He appeared on Hannah Montana as Thor, a new kid from Minnesota whom Jackson befriends. He also plays the bully, Bubba Bixby, in the Nickelodeon movie, Shredderman Rules, which was based on Wendelin Van Draanen's book series. He also provided the voice of the teenage Avatar Roku in Avatar: The Last Airbender. In 2007, Caldwell appeared in the film Transformers as Cafe Kid.
- Andrew played as Thor on Hannah Montana which co-starred Jason Earles.