Imahara joined MythBusters on the invitation of friend and occasional employer Jamie Hyneman[9] and former ILM colleague Linda Wolkovitch, who was an associate producer of MythBusters. He joined as the third member of the Build Team alongside Kari Byron and Tory Belleci, replacing former MythBusters welder Scottie Chapman. His colleagues often jokingly refer to him as the "geek" of the Build Team.