Bello Korissha is a supporting character in the Overman King Gainer story. He is a friend of the protagonist Gainer Sanga and another key character, Sara Kodama, and is introduced as a member of the local Exodus group known as the Gauli team. His involvement in the movement begins before the series' main events, as he is already part of the effort to escape the domed city of Domepolis when Gainer is initially arrested by authorities.

Bello is depicted as a skilled pilot with a calm and collected demeanor. He often serves as a grounding presence among his more impulsive peers, using his quick thinking to analyze situations and provide a rational voice during combat and strategic planning. One of his most notable traits is his telepathic ability, which allows him to communicate silently with his teammates, enhancing their coordination and efficiency in battle. This power is a significant asset to the Exodus group, enabling swift information transfer without alerting enemies.

As a member of the Exodus, Bello's primary motivation is to break free from the control of the Siberian Railroad company and the London IMA, seeking a new life outside the Domepolis. His role in the story is that of a reliable supporting ally. He fights alongside Gainer, Gain Bijou, and Sara to protect their group and ensure the success of their long journey to the promised land of Yapan. His loyalty is unwavering, and he consistently places himself in dangerous situations to safeguard his friends and the people of their city.

His key relationships are with his fellow Exodus members. As a close friend of Gainer and Sara from the beginning, he shares a strong bond of trust with them. He also works in concert with the mercenary Gain Bijou and other members of the Gauli team, such as their teacher Mamado Azaf. Over the course of the narrative, Bello experiences personal growth as he questions the nature of their world and the moral complexities of their struggle, yet he remains dedicated to his role as a defender.