From the Super Mario Wiki, the Mario encyclopedia
The Dark Longator is an enemy from Super Paper Mario that is only found in rooms 23 and 88 of the Flopside Pit of 100 Trials. It appears as a shadow version of a regular Longator. It attacks by stretching its head out to extreme proportions, reaching the player from a long distance away. However, this makes it easier to attack. A Dark Longator's head can go through the black blocks in the Pit.
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