A Tail
Tails is that cute little fox who flies around with his two tails like a f***ing superhero. He's also a genius who steals parts from Eggman just to build his flying airplane.
Tails is cooler than Sonic because he can fly and build things.
Tails is like a smart kid who builds airplanes in his spare time.
Tails is the best sidekick because he’s smart and flies.