Mad Ferret is a character that appears in the Sonic the Comic series published by Fleetway Editions. He was a supporter of Doctor Robotnik who styled himself the "villain supreme". An anthropomorphic ferret, he wore a red waistcoat and black bow-tie.
Mad Ferret's first act of villainy was to sabotage a giant bottle rocket during Bonfire Night, the Green Hill Zone's annual fireworks display to commemorate victory over Robotnik. The rocket destroyed the Statue of Freedom, demoralising the local citizens. Although he was captured by Tails, Mad Ferret believed that he'd won, having weakened the people's confidence so as to make it easier for Robotnik to re-conquer them. However, Tails gave a rousing speech, convincing the people that since they beat Robotnik before they could do it again. As he was taken away by the police, Ferret asked how a "wimp" like Tails could give such a rousing speech.
- Ferret's name is a play on the phrase "mad for it".