Flareon

“When storing thermal energy in its body, its temperature could soar to over 1600 degrees.”

— Pokémon Red

“It has a flame chamber inside its body. It inhales, then blows out fire that is over 3,000F degrees.”

— Pokémon Yellow

“It stores some of the air it inhales in its internal flame pouch, which heats it to over 3,000 degrees.”

— Pokémon Gold