 They have several strict rules, such as to never turn one's back towards the enemy or that defeat is punishable by death.During the Dream Choujin Tag arc, a group of Perfect Choujins infiltrate the tournament in order to hunt the masks of the competitors, in preparation of a full scale Perfect Choujin army invasion.Screw Kid (スクリューキッド) is a screw-themed Perfect Choujin who served Big the Budo.