Masao Orihara		00/04/19  Tokyo
  * Defeats Sanshiro Takagi to become the
    first champion.
Koichiro Kimura		00/07/26  Tokyo
Poison Sawada Julie	00/10/11  Tokyo
Sanshiro Takagi  	00/12/14  Tokyo
  * Defeats Sawada, Super Uchuu Power, and
    Tomohiko Hashimoto in a 4-way match.
Exciting Yoshida	01/03/28  Tokyo
Nosawa			01/06/29  Tokyo
  * Stripped on 01/11/22 by DDT commissioner
    for "not being appropriate as a champion".
Super Uchuu Power	01/11/30  Tokyo
  * Defeats Sanshiro Takagi and Poison Sawada Julie
    in a 3-way match.
Mikami			02/01/26  Tokyo
  * Wins a triple title match for KO-D single,
    tag team, and Ironman titles, teaming with
    Takashi Sasaki against Super Uchuu Power
    and Ironman champion Asian Cougar.
Super Uchuu Power	02/02/06  Tokyo
Sanshiro Takagi [2]	02/05/03  Tokyo
Kintaro Kanemura	02/05/31  Tokyo
Sanshiro Takagi [3]	02/09/07  Chiba
Gentaro			02/11/29  Tokyo
Mikami [2]		02/12/22  Tokyo
  * Defeats Gentaro, Sanshiro Takagi, and
    Tomohiko Hashimoto in a 4-way match.
Takashi Sasaki		03/07/18  Tokyo
Shoichi Ichimiya	03/10/26  Tokyo
Poison Sawada Julie [2]	04/02/11  Yokohama
  * Defeats Ichimiya, Sanshiro Takagi, and
    Ironman Heavymetalweight champion Danshoku
    Dino in 4-way match to win both titles.
Mikami [3]		04/11/02  Tokyo
Dick Togo		05/01/30  Tokyo
Sanshiro Takagi [4]	05/05/04  Tokyo
Danshoku Dino		05/10/23  Tokyo
Toru Owashi		06/05/02  Tokyo
HARASHIMA		06/12/29  Tokyo
Koo			07/06/03  Tokyo
HARASHIMA [2]		07/10/21  Tokyo
Dick Togo [2]		08/05/06  Tokyo
  * Defeats HARASHIMA, Seiya Morohashi, 
    Sanshiro Takagi, Yoshiaki Yago in
    a 5-way match.