Bennet M. Sylvester, better known as The Roman Monster, is the main antagonist of the Mr. Peabody & Sherman Fan-Ficiton The Hunt for the Roman Monster.


He is a sarcastic and dark red enormous mutant lizard. He has tiny dragon like wings and black eyes with red-glowing eyes. His back his protected with little horn-knobs. Whenever he gets angry, he will either breathe out fire or possess his victim.


  • He is similar to Satan, King Candy, Tyrannosaurus Rex, Other Mother, Godzilla, and Scar.