Who sings Scooby Doo Y'all of the credits in Spooky Island?

"Scooby-Doo, Y'all" from the credits of "Scooby-Doo on Zombie Island" is performed by the band 3LW. The song captures the fun and adventurous spirit of the Scooby-Doo franchise. It features a catchy pop sound that fits well with the film's theme.