Destroyer of colonial satellite independent organization. He was born in L 1 colonial satellite group, and received special training in destruction since he was a child, so his skills in manipulating MS and destruction are extremely high. He was trained as a hell agent since he was a child, which not only made his physical fitness different from ordinary people, but also caused his taciturn character. And he always takes the task as the first priority in his actions, so he will risk his life in order to complete the task. Besides, his name is just a code name. [Ciro Joel] is a hero of the colonial satellite independence movement, but his real name is a mystery.

In A.D. 195, when he organized a devastating battle against Oz, he was also sent to participate in the war and drove Gundam to the earth. But then the situation in the earth circle changed rapidly, which made him lose his original fighting purpose. Later, after he and other Gundam drivers met Liliana Dorian, his sealed humanity began to wake up slowly, and he also found his own purpose of fighting.

In the final decisive battle, he dueled with Bai Fengu's class teacher, Merialudo Pisgulavda, defeated him, and then knocked down the high-tech products destroyed by Rebner on the earth. After the war between the countries in the world and the colonial satellite countries ended, he lurked in a corner of the world. Later, when Barton's rebellion happened, he returned to the battlefield again, during which he persuaded Zhang to give up fighting. Finally, he drove the half-destroyed Wゼロカスタム to destroy the extremely hard protective wall of the anti-insurgency army headquarters.