A Zeon soldier with a prosthetic left arm, Hoover was the initial commander of the Living Dead Division's mobile suit team. He pilots a MS-09R Rick Dom. He is described by Daryl Lorenz as a "playboy-wannabe", though unknown to the others he was in a relationship with Dr. Karla Mitchum. 
Under Hoover's command, the Living Dead Division occupied the remains of Side 4, or Moore, now known as the "Thunderbolt Sector". They initially repel an operation from the Moore Brotherhood to recapture it, but he is killed after Io Fleming hijacks his Rick Dom, shoots him in the head and throws him out into space. His body is recovered by his teammates.
Mobile Suit Gundam Thunderbolt characters
|Earth Federation||Io Fleming | Claudia Peer | Cornelius KaKa | Graham | Bianca Carlyle | Vincent Pike | Monica Humphrey | Karolina Kurkova | Josh | Meg Rhim | Alicia | Sonia | Creed | Barclay | Nelson|
|Principality of Zeon||Daryl Lorenz | Karla Mitchum | Sean Mitadera | Hoover Aisla | Fisher Ness | J.J. Sexton | Billy Hickam | Denver Roach | Keith Myers | Burroughs | Layton | Sabastian Morse | Phillip Kaufman | Bull | Petro Garcia | Kleiber | Janice | Kate | Oppenheimer | Manning|
|South Seas Alliance||Levan Fuu | Chow Ming | Claudia Peer | J.J. Sexton|
|Civilians||Kathy Fleming | Randy Palh | DJ Naomi|