Longadiles are stronger versions of Longators that are first seen in Castle Bleck mainly in Castle Bleck Interior. Like with Longators, Longadiles attack by stretching out their heads toward their target. Longadiles are rather troublesome enemies during Chapter 8-3 as they are often found beside pits meaning if Mario or Luigi gets hit by one, they will fall into a pit taking extra damage. This is especially dangerous in the room with the many Dimentio clones where they must avoid them and the Longadiles. Longadiles can also be found in the Flipside Pit of 100 Trials.