Huff N. Puff is a large cloud monster of the Puff species appearing in the game Paper Mario. He is found in the sixth chapter of the game, Dark Days in Flower Fields, in the area Flower Fields preventing the sun from shining over the lands.
Bowser assigned Huff N. Puff to guard the sixth Star Spirit, Klevar. His base of operations is Cloudy Climb. Mario and his comrades, with the help from their newly-reformed teammate Lakilester, destroy his Puff-Puff Machine and engage him in battle. If Lakilester is the active partner when Mario confronts Huff N. Puff, the cloud boss will react differently, addressing the Lakitu directly by his old moniker "Spike" and calling out his betrayal.
Huff N. Puff attacks by Body Slamming, blowing wind, and using thunder and lightning strikes. When his HP reaches as low as five, he will then begin attacking by creating earthquakes. Huff N. Puff can absorb electricity attacks without any ill effects to himself. If Huff N. Puff is struck with any other type of attack, he will spawn several Tuff Puffs equal to the amount of damage done. These Tuff Puffs provide backup while battling Mario and his comrades. Huff N. Puff can inhale the Tuff Puffs to restore HP. They also assist Huff N. Puff with his earthquake attack, increasing the damage caused depending on how many Tuff Puffs join the attack. After Huff N. Puff is defeated, he explodes, freeing Klevar and sending several Tuff Puffs flying in all directions, although not before expressing disbelief that he could lose.
Huff N. Puff appears during the post-game parade, being shrunk by the Yoshi kids and chased by Gourmet Guy, who wants to eat him.
Huff N. Puff appears also in volume 26 of Super Mario-Kun. Huff N. Puff is seen to be enjoying himself before Mario and his partners attack him, causing Huff N. Puff to punch in retaliation before causing sharks and Bob-ombs to rain on Mario and his partners. Then the Puff causes a Super Earthquake; Lakilester retaliates with Spiny Surge, but Huff N. Puff creates Tuff Puffs that latch onto Mario. Unexpectedly, however, Luigi, Wario, and Yoshi jump in. Luigi sucks in the Tuff Puffs with his Poltergust 3000, and Wario then tickles Huff N. Puff so Mario can land a blow on Huff N. Puff with his hammer (though Wario is caught in the crossfire).