Registeel is a character in The Air Ride Series. He is the leader of the legendary golems, since they kicked
out Regigigas. He is the smartest of the Regi Trio, being the brains of the group. He is usually irritated by Regice's lateness.
Registeel will be in SMSB as a boss in DLC Pack 4.
Registeel is Poyo Rides favorite of the Regi Trio, which may be why he is the leader of the group.
Registeel almost made it into SMSB DLC Pack 4, but was replaced by Regice since Poyo Ride really couldn't do much with Registeels moveset, and had some great ideas for Regice.