Constantine, the world's most dangerous frog (and #1 criminal), is the main antagonist of Muppets Most Wanted. He was in a Russian Prison called a Gülag, he manages to escape in various ways. He likes blowing thing up, always walking away, then blows whatever he choose by hitting a Red button that activates a bomb. He escaped in the movie, with the help of his assistant, The Lemur, He plays the fake Kermit the frog, since he glued a fake one on Kermit's lip.
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