Wracktail

Wracktail is an optional boss from Super Paper Mario. This self-proclaimed "God of wrath" is fought on the hundredth floor of the Flipside Pit of 100 Trials. According to Wracktail, he was created by the Tribe of Ancients to test the skills of the heroes who possessed the Pure Hearts, but was eventually locked away in the Pit. He seeks revenge on the Tribe for trapping him in the pit although it is not clear why they did so in the first place. Once the player defeats Wracktail, they obtain the optional Pixl Dashell and leave, thus giving access to the Flopside Pit of 100 Trials.