Secret History Tails

Miles "Tails" Prower is one of the main antagonists of the Mashed Multiverse, serving as the titular main antagonist of the episode Secret History of Sonic & Tails, and the main antagonist of the series There's Something About... Despite being presented as the kind and supportive partner/best friend of Sonic the Hedgehog, in reality Tails is an obsessive and delusional maniac who murders anyone who he becomes friends with.