The Killer clown is a clown that appeared in Happy Halloween! as the main antagonist. He kills Joseph and kidnaps Bowser Junior, Cody, and Ken, and teams up with the Other Killer Clown. It was another panned character by the SML Fans. It is possible that he was portrayed by Anthony Miller due to the voice. This has been confirmed by Anthony that he was the Killer Clown, and he also didn't really like this role due to it being around the same time Killer Clowns have been present.