High Quality Content by WIKIPEDIA articles! Geoff Peterson is an animatronic human skeleton that serves as the sidekick on the late-night talk show The Late Late Show with Craig Ferguson. He is voiced and operated by Josh Robert Thompson and first appeared on The Late Late Show on April 5, 2010. Often referred to as a "robot skeleton", Peterson is a radio-controlled animatronic robot puppet designed and built by Grant Imahara of MythBusters.