Boomstick:  Besides flight , Tails ' copter butt blades are strong enough to bust metal , and he can use them like a turbine of an engine to keep up with Sonic 's super fast speeds . He can almost reach the speed of sound .
Wizard: Tails pledged himself to Sonic 's freedom fighting cause against Dr. Eggman , and the _ two _ became friends , almost like brothers . They also share a sort of teacher - student relationship , though it was n't always clear who was the student .
Boomstick: It was Tails who invented the famous Spin Dash , not the speedy hedgehog .