Mark Acheson (born September 19, 1957) is a Canadian actor. Among his better-known roles are Fisto on the 2002 Masters of the Universe cartoon, Boris on Black Lagoon, the title character of Fat Dog Mendoza, Sabretooth on Hulk vs. Wolverine, Magistrate Wilkins on Smallville and Tirek on My Little Pony: Friendship Is Magic.
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- Unicron