Red/Blue - When storing thermal energy in its body, its temperature could soar over 1600 degrees.
Yellow - It has a flame chamber inside its body. It inhales, then blows out fire that is over 3,000F degrees.
Gold - It stores some of the air it inhales in its internal flame pouch, which heats it over 3,000 degrees.
Silver - If fluffs out its collar to cool down its body temperature, which can reach 1,650 degrees.
Crystal - Once it has stored up enough heat, this Pokemon's body temperature can reach up to 1700 degrees.
Stadium - Its fiery breath reaches close to 3,000 degrees. Its body temperature exceeds 1,650 degrees when storing fire inside.