Malibu Peirou is a member of the Twin Star Troupe, a duo that operates under the command of Major Mary. He is the brother of Cocomo Peirou, and the two work closely together as a team. Malibu is characterized as reserved, thoughtful, and enjoys reading, often displaying a logical and scientifically minded outlook. This is evident in his skepticism toward unscientific practices such as fortune-telling, which he openly advises against. He serves as the brains of the Twin Star operation, being capable and cunning when carrying out missions. His role in the story is that of a supporting character who assists the main Angel Troupe, often working alongside his twin brother. The relationship between Malibu and Cocomo is notably close, with the pair frequently clarifying that they are twins rather than romantic partners. Malibu does not undergo significant visible development over the course of the series, remaining consistently levelheaded and analytical. His notable abilities include strategic thinking, resourcefulness, and a calm demeanor that makes him effective in mission planning and execution.