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|This article is about a/an villain in Choudenshi Bioman.|
Mason is the leader who once plotted against Doctor Man himself. Armed with a staff which fires bolts. Later rebuilt and armed with Mason Rockets and Mason Machinegun. He was killed by Silver.
Gaoranger vs. Super Sentai
Mason is one of several past Super Sentai villains that appear in clips in the anniversary special Hyakujuu Sentai Gaoranger vs. Super Sentai.