It was considered a continuation of UWF International, having most of its former roster: Nobuhiko Takada, Yoji Anjo, Kazushi Sakuraba, Daijiro Matsui, Naoki Sano, Masahito Kakihara, Yoshihiro Takayama, Kenichi Yamamoto and Hiromitsu Kanehara.

The promotion is also a predecessor to the Pride Fighting Championships, which held their first event towards the demise of Kingdom.

With the rise of mixed martial arts, Kingdom held legitimate shoot fights in their events.

Attempts to rectify this by using talent from other shoot-style promotions including Battlarts did little to help, and it seemed that in the eyes of the Japanese fans the era of shoot style wrestling had ended.

Meanwhile, Kakihara and Takayama joined All Japan Pro Wrestling as free agents, while Anjo dabbled in K-1 before later reappearing in All Japan Pro Wrestling and Dream Stage Entertainment's Hustle as "Commander Anjoe".