Frost Piranha

Frost Piranhas are a type of Piranha Plant with a freezing bite and icy breath found in similarly cold climates. They first appear in the Paper Mario series and later reappear in the Super Mario series.

Paper Mario
Frost Piranhas first appear in Paper Mario. They are visually blue recolors of the game's Putrid Piranhas, and as such are larger than normal Piranha Plants and face the side, allowing them to be jumped on. Like all normal enemy Piranha Plants in the game, they burrow underground and spout up to attack. Mario first encounters Frost Piranhas while on his way to Starborn Valley. Along with being exceptionally strong, they have the ability to shoot icy blasts of breath that can freeze Mario and his allies (although the blasts themselves will not hurt them). Frost Piranhas are later encountered on Shiver Mountain, where they are less abundant.

Paper Mario: The Thousand-Year Door
Frost Piranhas reappear in Paper Mario: The Thousand-Year Door, where they, like Putrid Piranhas, are now depicted as Pale Piranha recolors and as such are now normal-sized and upward-facing, preventing jump attacks against them. They can be found on the way to Fahr Outpost and are slightly stronger than previously. They no longer have their icy breath attack, but their bites can freeze Mario or his partners if not Guarded against.

Super Paper Mario
Frost Piranhas return in Super Paper Mario, where they are found in The Underwhere. This time their stalk is green like normal Piranha Plants instead of blue, and they are only found popping out of Warp Pipes. They can attack by breathing an ice gust. Frost Piranhas sometimes drop an Ice Storm if defeated.

New Super Mario Bros. U
Frost Piranhas are reintroduced in New Super Mario Bros. U, where they are also known as Ice Piranha Plants. They look and act similar to Fire Piranha Plants, but shoot Ice Balls, which are capable of freezing playable characters as well as other enemies, similar to Ice Bros. They inhabit the world of Rock-Candy Mines, where three of them appear in the level Fuzzy Clifftop, with two in a Warp Pipe and one on the ceiling. Additionally, Yoshi can eat their iceballs and spit them at other enemies.

New Super Luigi U
Frost Piranhas reappear in New Super Luigi U. In this game, they appear in the level Broozers and Barrels in Frosted Glacier.

Super Smash Bros. Ultimate
In Super Smash Bros. Ultimate, one of Piranha Plant's alternate color schemes is based on a Frost Piranha, but the stalk is yellow and the hand leaves are yellow and green. Also, it is mentioned briefly by Viridi during Palutena's Guidance dialogue for Piranha Plant.