The Frightener

The Frightener is the main antagonist of the seventh Goosebumps Most Wanted book, A Nightmare on Clown Street

History
When he was little, he was scared by a carnival clown. He was so frightened that he grew a vendetta against all clowns, promising he would get revenge on them for scaring him so badly. He built Clown Street as a place to send clowns to, having hired circus people to help him. He took control of Koko's Klown Academy and forces clowns to entertain him by fighting animals such as bears and squids. The clowns usually lose, so he always needs more clowns to send there. When they aren't fighting, he makes the clowns go out and entertain kids, and keeps all the money.

When Ray Gordon came to Koko's, he heard about Clown Street and went there on purpose to find out what is going on. The Frightner made and him and the other clowns go to his nephew Freddy's birthday party, and brought a bear that was meant to attack them if they didn't make Freddy laugh. At the party, Ray and the others surrounded the Frightener, messing with him and scaring him. He ran off, and was chased out of the house by the bear. It is unknown what happened to him after that.

Physical appearance
He is tall and lanky, with short brown hair on top of a pale, square face.

Personality
He is cold and emotionless, but is still easily scared by clowns. So much so that he doesn't face them directly and was able to scared off in the end.

Trivia

 * His real name is unknown.