World Entrance Level 2

Metal Sonic Kai is the transformation of Metal Sonic and was only seen in Knuckles' Chaotix and comic with the same name. After losing to the player, (it can be any member of the Chaotix), Metal appears to Dr. Robotnik. After turning another Chaos Ring into a Dark Ring, the Doctor motions Metal to enter the ring. With the power if the Dark Ring, Metal Sonic transforms into a huge, red, cat-like mechanical being and the Chaotix member (whichever the player chooses) and his partner fall into a square room.