My elementary school's resident bully was undefeated in fist to fist playground combat.
He never lost.
Now if you showed courage and tried your best in a fight against him he would show you respect but that rarely ever happened.
Usually what would happen is kids would talk shit and then take off running when the bully came to call them out on it.
His undefeated streak was legendary.
100-0
^ Something close to that. No losses. After a while I lost count of all his victories.