Michael David Adamthwaite is a Canadian actor born on September 1, 1981, in Ontario, Canada, who has built an extensive career in voice acting for anime and animated series since the mid-1990s. He is recognized for his versatility in dubbing numerous characters across a wide range of anime productions, often working on English adaptations for the North American market.

Adamthwaite's body of work in anime includes a diverse array of roles. He is the voice of Shuei Ran in the series The Story of Saiunkoku, a role he performed across multiple episodes of the show. He also voiced Truffle in the series Trouble Chocolate. Within the Zoids franchise, he provided the voice for both Boombox and Quade in Zoids Wild, with Quade being a prominent leader character in the series. His contributions to the Death Note franchise include voicing Raye Penber in the original series and Anthony Rester in Death Note Relight 2: L's Successors.

Beyond these specific roles, Adamthwaite has an extensive filmography that demonstrates recurring collaborations with voice directors and studios in the Vancouver area, a major hub for anime dubbing. He has been a consistent presence in English dubs for Gundam franchise, notably as the voice of Yzak Joule in Mobile Suit Gundam SEED, Mobile Suit Gundam SEED Destiny, and related special editions. He has also voiced characters in major series such as Tsukasa Domyoji in Boys Over Flowers, Toshiro Hijikata in Gintama°, and Byakuya in Inuyasha: The Final Act. His work extends to animated series outside of anime, with his portrayal of Jay in the long-running series Ninjago being one of his most recognized roles.