Tattletale Strangler

The Tattletale Strangler is the main antagonist of the Spongebob episode, SpongeBob Meets the Strangler. He is a green fish who lives in Bikini Bottom. He is also a wanted criminal. He is notable for strangling his victims after they rat him out, hence the name. He is first seen littering and the police arrest him, but he escapes. He was SpongeBob's bodyguard and tried to strangle SpongeBob many times, but fails several times and reveals to SpongeBob that he is the Strangler after removing the fake-mustache, but flees after his friends heard someone had said "party".

Jailtime
The Strangler has been wanted by the police and has a wanted poster. The Strangler became so annoyed by SpongeBob, that he fled from him and eventually ended up in jail again and apparently was happy to be away from SpongeBob after he tells him that he is the Strangler as SpongeBob discovers the truth, but then, he hears Patrick ask him what he's in for.