Bonetail

History
Bonetail used to belong to the Shadow Queen, as a pet. It turned out so powerful that she supposedly put it at the very bottom of the Pit of 100 Trials.

Personality
Bonetail is the oldest brother of Hooktail and Gloomtail. He lives at the bottom oif The Pit of 100 Trials. He is the hardest boss in Paper Mario: The Thouand Year Door.

Battle
Bonetail is, again, the hardest boss in the game. He has 200 HP, 50 more HP than the Shadow Queen's 150. He has a variety of fire breaths that cause various status ailments, along with normal fire breath. He can also stomp on the player and do a decent amount of damage. This boss isn't very hard, as if you have enough HP and FP, along with good badges equipped, you can easily take him down. The only reason he is the hardest boss in the game is because you have to go through all the other 99 florrs, reducing HP, FP, and Star Power.