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Beauregard
Beauregard is the thick but loveable janitor at the Muppet Theater. He tries to be helpful, but his dimwitted efforts frequently result in disaster. He first appeared in Episode 310 of The Muppet Show.
Affectionately known as Beau or Bo, his slow wit is often preyed upon by other Muppets who use him to their own purposes. He has a characteristic blink and often turns to the camera and says, "Right."
Bo appeared on the stage in various sketches and skits, including an appearance in the Veterinarian's Hospital sketch in Episode 501: Gene Kelly.
However, Bo was more comfortable backstage. It was here that a bunch of rats convinced him that he was an honorary rat, so that he would let them eat food out of the refrigerator. To his delight, they even elected him president. When Kermit delivered an ultimatum -- either the rats go or Beau does -- Beau heroically took the burden upon himself, offering to leave.
Beauregard's notable movie appearance was in The Great Muppet Caper, where he played a taxi driver. He brought Kermit, Fozzie and Gonzo to the Happiness Hotel -- and right through the front door, into the lobby. Bo makes an oft-quoted joke in The Great Muppet Caper -- when Kermit says that they'll catch the thieves red-handed, Bo asks, "What color are their hands now?"
The Great Muppet Caper was Bo's last major role. He made a brief appearance in the wedding scene in The Muppets Take Manhattan, and then disappeared from the cast. He made a brief, non-speaking cameo in the 2002 TV-movie It's a Very Merry Muppet Christmas Movie.