He is voiced by Natsuki Hanae in the original Japanese version and by Eric Scott Kimerer in the English dub.
Biscuit joined Chryse Guard Security to support his two younger sisters and grandmother.
After the children of the CGS Third Group staged a coup against the adults of the organization and took it over, Biscuit became an officer of the newly formed Tekkadan, serving as the group's strategist and staff officer.
After learning about his older brother Savarin's death, he had a fallout with Orga over whether they should on Earth and continue fighting. Biscuit was against this because it would put every member of the Tekkadan at risk, and because he wanted to return home to his family.
Biscuit ultimately chose to stay and was tragically killed in action by Carta Issue when she assaulted the Mobile Worker he was piloting with Orga. With half his body trapped under the crushed wreckage, he desperately tries to crawl out, saying how he can't die yet as he needs to get back to Mars and send his sisters to school and build up Tekkadan, but he doesn't survive the injuries and dies in front of Orga.
His death was later used by Orga to rally the members of Tekkadan to continue their mission. After safely escorting Kudelia Aina Bernstein to Edmonton, Orga used some of Tekkadan's funds to put Biscuit's two younger sisters through school.