Butters started out as a background character called "Swanson." His first line on the show was in "
Clubhouses" in Season 2. Not until "
Two Naked Guys in a Hot Tub" (Season 3) did he get the name "Butters." In Season 4, he started to become more of a major character, sometimes replacing one of the main boys when they were gone. Butters is one of a few characters in South Park who rarely cusses. He's also one of the nicest kids in his school. However, even Butters has a dark side when he transforms into his alter ego, Professor Chaos. He usually transforms when he wants revenge on the other boys for not being nice to him.
Butters-centric episodes include:
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