Marurao is a supporting character in FLCL Progressive, a member of the Bureau of Interstellar Immigration. He works alongside his colleagues Eye Patch and Tonkichi from his home, collaborating in the ongoing struggle against Medical Mechanica. Marurao is also the father of a young girl named Aiko, who becomes involved with the main characters through a potted plant that possesses the ability to reverse the polarity of N.O. channels. His motivations appear to center on protecting his daughter and advancing the Bureau’s technological efforts against the corporate threat. In terms of personality, he is portrayed as a practical adult figure, more grounded than the eccentric main cast, but still caught up in the surreal events surrounding N.O. power. He and Eye Patch are shown in possession of the remains of an inactive Canti, which they use to develop N.O.-powered technology, demonstrating a technical and strategic role in the story. His key relationship is with his daughter Aiko, and his connection to the Bureau places him in opposition to the chaotic schemes of Haruko and Jinyu. Marurao’s direct involvement in the plot is relatively minor, but his work behind the scenes contributes to the resolution of the climax, particularly through the recovery of the flowerpot. He does not undergo significant personal development, instead functioning as a steady, background presence that aids the protagonists indirectly.