He is voiced by Taro Yamaguchi in the Japanese version and by Richard Epcar in the English dub.
Haeda and the rest of CGS were hired to provide security to Kudelia Aina Bernstein, an advocate for the Mars Independence movement. When the CGS base was attacked by the forces of the Gjallarhorn Mars Branch, Haeda and the rest of the adults of the First Group stayed safely in the base and let the "Human Debris" of the Third Group do most of the fighting. After the battle, Orga Itsuka, leader of the Third Group, protested to Haeda for letting the members of the Third Group die for them while doing nothing to help, but Haeda and his goons simply beat Orga up.
However, at night, while the First Group were all sleeping, the children of the Third Group staged a revolt against the adults of CGS and tied all the members of the First Group up. After they announced they were taking control of the company, Haeda was executed by Mikazuki under orders from Orga Itsuka.