(THECOUNT) — Grant Imahara, an electrical engineer and roboticist who hosted the popular science show MythBusters and Netflix’s White Rabbit Project, has died. He was 49.

Imahara died suddenly after suffering a brain aneurysm, according to multiple sources.

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“I’m at a loss,” former Mythbusters co-host Adam Savage said in a tweet:

“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.”

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