Travis Sherman is the secondary antagonist of Scooby-Doo! Mystery Mayhem. He is the founder of a company called Shremantech Headquarters. He was first thought to be the game's main antagonist but that was to hide the game's true main villain.
He, along with his chief executive officer, Selena Drake, had a plan to use her mind control inventions to brainwash people into only buying his products, making him rich and removing all competition, and uses the Tome of Doom (an ancient mystical text to) to release evil ghosts and demons to clear the land he wants to buy. They built transmitters all over North America to brainwash people and enlisted Walter Peabody, Robert Zabrinski and Mindi Stiles to help them in their plan. He even successfully brainwashes Fred Jones, Velma Dinkley and Daphne Blake. However Shaggy Rogers and Scooby-Doo managed to disable his machine, save their friends and foil Travis's scheme and he was arrested.