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there are no dvds only manga sorry
He isn't in an episode. He is in a Dragon Ball Z parody manga by Akira Toriyama called Neko Majin.
the majin Mario
Depend on which version of Goku you're speaking of:
Goku SSJ1 vs Majin Vegeta: Majin Vegeta
Goku SSJ2 vs Majin Vegeta: Equal
Goku SSJ3 vs Majin Vegeta: Goku
Goku SSJ4 vs Majin Vegeta: Goku
majin vegeta