Slash Beast, known in Japan as Slash Beastleo (スラッシュ・ビストレオ Slash Beastleo?), is a Lion-based member of the Repliforce, a group labeled as Maverick due to their wanting independence. He enlisted in Repliforce only to freely exercise his combat abilities, but despite this attitude he showed dauntless courage in battle, fearing no one. During the coup, Slash Beast was put in charge of guarding Repliforce's military supply train.