Tennis Opponent
Today, I hit against one of the best tennis partners in the world; and there is no question why he is recommended for all tennis players. He consistently returns any ball that is hit against him; and the ball is returned just as fast as you hit.
His weakness? Lobs. He's not much of a mover.
There is no complaining at all from him but he is quite loud when he hits the ball. You'll surely run out of energy while hitting against him. And best of all, he's there for you when you have no one else to play with; his feeling won't be hurt that he's your last resort too.
His name? Wally.