Mark Acheson is a Canadian actor born in 1957 (exact date not known). He works as a voice actor for the Ocean Group Company and has voiced Unicron in Transformers: Armada (Micron Legend) and Transformers: Energon (Superlink), as well as Fisto and Chadaz in He-Man and the Masters of the Universe (2002). Acheson also had a minor role in the 2009 film Watchmen.