Mondo Uguisudani is a Prism Star and a member of the unit known as The Shuffle, having studied at the Schwarz Rose institution. He appears as a tall teenager with light blue eyes and short, messy orange hair, and he wears a distinctive red diamond-shaped mark of face paint on his right cheek. His given name and surname follow a naming convention among The Shuffle members, with given names based on the suit they represent and surnames taken from stations on the Yamanote Loop Line in Tokyo.

A former Prism Star who was once considered one of the “Kings of Prism” alongside his rival and friend Koji Mihama, Mondo is the father of Hiro Hayami. His background is marked by a deep rivalry with Koji, and this history has left significant emotional weight that colors his relationship with his son. Mondo is portrayed as confident, imposing, and deeply dedicated to the fundamentals of Prism Shows, with the ability to execute complex skills with ease. He is a perfectionist who values precision, efficiency, and logical thinking, and he is comfortable working independently, having chosen to perform solo after his previous group disbanded.

His motivations are driven by a strong desire for success and recognition, which manifests as an intense pressure on his son to excel. This push for Hiro to be the best causes tension between them, as Mondo struggles to connect emotionally. Over the course of the story, however, he learns to trust and support Hiro, leading to a meaningful reconciliation. His practical, independent nature, combined with his adaptability and patience, makes him a reliable and skilled performer even when facing unexpected challenges. Mondo remains actively involved in the Prism Show industry, playing a vital role in guiding his son’s career while gradually confronting his own vulnerabilities.