Adventures of Sonic the Hedgehog is a comical, light-hearted and gag-driven adventure series based on the titular character Sonic the Hedgehog, a sometimes arrogant yet kind-hearted and mischievous teenage hedgehog with the power to move at supersonic speeds. Sonic, along with his idolizing young friend Tails, regularly oppose the main antagonist Dr. Robotnik, his robot henchmen Scratch, Grounder, and Coconuts, and thwart their plans to conquer their home planet of Mobius. The series features a short PSA segment titled "Sonic Says" at the end of each episode; these segments were written by Phil Harnage.