Choujin Sentai Jetman
Sudden Hammer! (1x38)
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The Jetmen freeze a monster maker sent by Maria and take it to scientists to study. Toranza punishes Maria for allowing this to happen, and goes off to retrieve it with a monster that is a chameleon and a hammer. Its victims hear it, but don't see it. Ryu's old friend tries to steal the monster maker, but encounters Toranza. The chameleon monster is destroyed. It's hammer falls within reach of the other monster-maker, which recreates it. The Jetmen defeat it again and the two old friends make peace.