Lava Piranha

An enormous overgrown piranha who lives within the confines of Mount Lavalava in Paper Mario and guards Misstar, the fifth Star Spirit.

Lava Piranha speaks in hacks and shouts, and always seems to be smiling, even when defeated.

Though if more attention is payed to dialogue, Lava Piranha isn't one thing, it's a type of piranha plant in the Mario world and there are obviously more than one, for the characters talk about him as being a lava piranha, and Goombario's tattle ability refers to him plurally as if there are more than one.

Lava Piranha's Stats and Tattle Information

Max HP: 80 (has 40 HP per round), Attack Power: 5 (Round 1: normal), 7 (Round 2: on fire), Defense: 0

Tattle: Lava Piranhas are plants that can somehow survive in lava.
Regular: They blow out huge balls of fire to attack. That is one big flower! Wow!
On Fire: Since their bodies are on fire, you'll take damage if you stomp on 'em. Don't worry of you're fire proof. They'll try to burn you with their fire breath. They're creatures born of fire, so water attacks will work extremely well against them.

Lava Buds' Stats and Tattle Information

Max HP: 16 (have 8 HP per round), Attack Power: 4 (regular only), Defense: 0

Tattle: Lava Buds are little flower branching out from the main stem of the Lava Piranha. They love it in the lava. Hey, if you were a fiery plant you'd love it in there, too.
Regular: They blow small seeds or other projectiles to attack, the small Lava Buds attack power is 4.
On Fire: They blow put Petit Piranhas. The Lava Bud's stems themselves won't attack you.

Petit Piranhas' Stats and Tattle Information

Max HP: 1, Attack: 6, Defense: 0

Tattle: Petit Piranhas spew from Lava Buds. These things can do some serious damage, so watch it!