Grant Masaru Imahara (October 23, 1970 – July 13, 2020) was an American electrical engineer, roboticist, television host and actor. He was best known for his work on the television series MythBusters, on which he designed, built, and operated numerous robots and machines to test myths over the course of the show. Imahara began his career at Lucasfilm, where he worked in the THX division as an engineer and in the Industrial Light & Magic (ILM) division in visual effects. His work has been featured in films from franchises such as Star Wars, Jurassic Park, The Matrix, and Terminator.