Tub-O-Troopa is an enemy that appears in the game Super Mario RPG: Legend of the Seven Stars. Tub-O-Troopas are very large Koopa Paratroopas that can be found in Bowser's Keep. They have counterparts known as Heavy Troopas.
In battle, Tub-O-Troopas mainly attack by charging at one of Mario's party members. They are well known for their high HP and attack.