Name: Kasai no seishin (meaning fire spirit)
Chakra Nature: fire
Weapon: Natural weapons, e.g. claws, teeth and its fire.
Personality: Extremely playful, however, when it becomes mad, it becomes quite dangerous changing appearance and reeks havoc everywhere is goes.
Size: in between small and medium
Appearance:Nobody actually knows what it is or how the kage found it, but they all know, never make it ANGRY.
happyAngryIt doubles in size, eyes go dark red, teeth and claws grow. And most of all, all red flames become blue, signalling that they are hotter then before.
Jutsu:Fire style: Fire Ball jutsu
Teleportation jutsu
Fire style: Fire dragon jutsu
Fire Style: Phoenix Flower Jutsu
Fire Style: Dragon Flame Jutsu
(all canon)