Also known as: ゼロ(仮面ライダーゼッツ)
A character from Kamen Rider Zeztz (Series). He's the former Commander of the organization named Confidential Organized Defensive Establishment, (CODE for short) an Organization which specializes on protecting both the Reality and Dream World from Nightmares.
He can remotely control the CODE Zeroider, the main Rider Machine of Zeztz.
Sometime later, it was revealed that he is the Biological Father of Yorozu Baku/Kamen Rider Zeztz.