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William E. Martin, also known as Bill Martin, is an American musician, songwriter, screenwriter, comedic actor and voice actor.
Description above from the Wikipedia article William E. Martin, licensed under CC-BY-SA, full list of contributors on Wikipedia.​
as Croupier
as Tour Guide
as Rider of Ramond (voice)(1 ep)
as Shredder (voice)(8 eps)
as Samhain / Goblin (voice)(1 ep)
as Head Troll (voice)(1 ep)
as Sandman (voice)(1 ep)
as Samhain (voice)(2 eps)
as Guard
as Tor (voice)(13 eps)
as Rock Man (voice)