From the He-Man Wiki – 

“Two-Bad is a character in the popular Masters of the Universe toy line and accompanying cartoon series, He-Man and the Masters of the Universe.

Two-Bad is a two-headed Evil Warrior who is basically two different beings sharing the same body. In some ways he is like Siamese twins, although both halves of his body are very different-looking creatures who appear to be from entirely different species. His right half is a blue creature, while his left half is a purple, scaly creature with an eyebrow-like yellow band on his forehead. His two heads have the habit of continuously arguing with one another (much like the ghostly Fib Face in Filmation’s “Ghostbusters”).”

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