Inferno is the main antagonist of Scooby-Doo! and WWE: Curse of the Speed Demon disguised by Triple H. Inferno was the disguise of Triple H and Stephanie McMahon, who are determined of become champions in the race of WWE Muscle Muto X Off Road Challenge.
He has light red skin, and red eyes, he has a pilot hat on his head.
Role in the movie
Inferno was seen when he was sabotaging the monster truck race in a attempt to defeat Mystery Inc. and Team Taker, Team Taker and the Mystery Inc. work together to find the true identity of Inferno, he was Stephanie in disguise, then Triple H uses the Inferno costume to destroy Scooby, Shaggy, The Undertaker and all of his loved ones, then The Undertaker (with the help from Mystery Inc.) manages to defeat Inferno, then Fred Jones and his friends unmask Inferno, Inferno was revealed to be Triple H. The police came and arrests Triple H for trying to sabotage the monster truck race, then Triple H redeems himself and realizes his mistake along with Stephanie McMahon, so the Mystery Inc. has never had to worry about Triple H and Stephanie McMahon again.