Classic enemy. Green-shelled Koopa Troopas walk in a straight direction forever unless they hit an obstacle, causing them to even walk off cliffs at times. Red-shelled Koopa Troopas will walk in a ...

Koopa Troopas are common, well-known enemies in the Mario series. Unlike Goombas, these guys can survive being jumped on. After being jumped on, however, they will retreat into their shell and stop ...