News of Imahara's death was confirmed to the New York Times by the Discovery Channel last night (July 13). A cause of death was not revealed, although it was believed to have been a brain aneurysm.
"We are heartbroken to hear this sad news about Grant," Discovery said in a statement. "He was an important part of our Discovery family and a really wonderful man. Our thoughts and prayers go out to his family."
Prior to MythBusters, Imahara had worked as an animatronics engineer and model maker for George Lucas's Industrial Light & Magic. He operated R2-D2 in the Star Wars prequels.
Further, Imahara worked on Terminator 3: Rise of the Machines, The Lost World: Jurassic Park and the Matrix sequels.
Imahara is survived by his fiancée Jennifer Newman.
MythBusters host Adam Savage remembered him with the following tribute post:
I'm at a loss. No words. I've been part of two big families with Grant Imahara over the last 22 years. Grant was a truly brilliant engineer, artist and performer, but also just such a generous, easygoing, and gentle PERSON. Working with Grant was so much fun. I'll miss my friend.— Adam Savage (@donttrythis) July 14, 2020