The man in the Black Persian suit (complete with tail that seems to move a bit on its own, not quite lifelike) has very long legs, and honestly doesn't even seem winded by the chase, loping along behind the Rocket with easy speed.

"Your arrogance is your undoing, Rocket," is called out in return, just before the Black Persian puts on a burst of speed to very gracefully make a tackle, forcing the Rocket to the ground.