Dr. Eggman

Dr. Eggman AKA Dr. Robotnik, is Sonic's enemy and one of Bowser's partners. He first met Pooh and friends in Winnie the Pooh Meets Sonic the Hedgehog, where he created a robotic counterpart of Sonic, known as Metal Sonic.

Trivia

 * Dr. Eggman will join Bowser and friends as one of the Emerald Hunters along with Metal Sonic.