Young Warrior Retsu Maru (Retsu Maru)
Relationship: Son of Blazing Warrior Gundam. Nephew of Noumaru Gundam. Cousin of Onmaru.
He possesses the ceremonial sword of Bukamai. His personality differs between the Comic World version and the Bonbon version, and in Rei, he has a different mother. In the first person, he says "oirā" in the Comic World version, but "ore" in the Bonbon version. In the preview comics published in Bonbon, he used to speak with "~ccha" at the end of sentences.
In the manga, he calls his father "oyaji" (dad), while in Rei, he calls him "chichi-ue" (father).
His weapon is a flame dagger.
BB Warrior No.265.

Retsu Maru Active
An original form from the Comic Bonbon version. Equipment used during infiltration on Kurosu Bakuin Island. His helmet includes a communicator, and he is equipped with concealed gear throughout his body. His main equipment includes a ninja sword and a compact, lightweight Tanegashima gun.

Moudashou Retsu Maru (Fierce Strike General Retsu Maru)
An original form from the Comic Bonbon version. Combined form with Saizou, who is furious at the death of Teikun. His special move is the Sudden Secret Technique Extreme - Grand Slam.