Who would win in a fight between Hulk vs Captain Underpants?

Hulk would win. He could punch him into a train track. Hulk would chase him. Captain Underpants will think he could beat the Hulk. Hulk is right. He won't be tired. Hulk would catch him and punch him into a cave and smash the cave and grab him and throw him into a building. Hulk wins.