Tails is the secondary protagonist of the Sonic the Hedgehog series, he's Sonic's best friend with a strong brotherly bond, he uses his twin tails as a makeshift propeller to help give him temporary flight and can also use them for offensive methods, he is also a boy genius with an IQ of 300! He's very tech savvy and is really good at gathering intel from Sonic's foes to come up with counter strategies against them, and can outsmart his foes with his intellect as well! In this game, he once again tags along with Sonic, after returning back to Atlas (the main central utopian-like city in the World of Trophies) after being flung off from the Midair Stadium incident. When he notices that Sonic brought Shantae along with him, he realizes that the portal to different worlds have been reopened and everything is spilling out from them bringing a lot of confusion and chaos. He joins the Heroes of Smash to help stop this evil that's causing this!