These kooky illustrations by Takayoshi Mizuki depict Ultraman, Ultraseven, and Dino-Tank(!), smacking the tar out of other rubbery reptiles. If you exposed the Muppets to toxic waste and mescaline, this is what you'd get.

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Mizuki created these masterworks between 1965-1972. I love the surrealism of #2, wherein Ultraseven are battling inside Dino Tank's stomach.

[via Pink Tentacle and The Takayoshi Mizuki Collection]