Jikokuten is one of the Four Heavenly Kings, divine entities dedicated to opposing Getter Rays and the evolutionary futures enabled by Getter Robo technology. He participated in manipulating events through the human vessel Abe no Seimei to orchestrate attacks using Oni creatures against humanity, aiming to eliminate the threat posed by Getter Robo. Within the group, Jikokuten serves as a warrior, wielding a sword and employing a shape-shifting left arm that provides versatile combat capabilities, distinguishing his fighting style. The Four Heavenly Kings collectively perceive Getter Robo and its Getter Ray energy as a planetary threat due to its capacity to drive rapid evolution and alter humanity's future; their actions stem from a desire to maintain cosmic order by preventing Getter's influence. Jikokuten operates alongside Tamonten (the leader), Komokuten (the strategist who employs a picture scroll in battle), and Zochoten (a berserker wielding a monk's staff).