Gabi is a secondary character in Devilman crybaby, known for being a member of a small, tight-knit group of young men who express themselves through hip-hop and rap. The group, which also includes Wamu, Kukun, Babo, and Hie, is often seen together rapping and spending time in their local neighborhood. Gabi is physically distinctive; he has tall stature, dark skin, and a bold fashion sense often characterized by the color red. His hair is styled in dreadlocks that are typically tied back into a ponytail, and he has two band tattoos encircling his right bicep.

Gabi possesses a bold, brash, and aggressive personality that he does not hesitate to display. He is quick to act, exemplified in a scene where he grabs and yells at a bystander to vehemently deny being a thief when falsely accused. This fiery and confrontational exterior, however, belies a character who is good at heart and intensely loyal to his friends. He is a talented and passionate rapper, using his music as a potent form of self-expression, and he is also physically strong. His motivations are grounded in loyalty to his crew and a desire to protect those he cares about, a trait that becomes increasingly important as the story progresses.

Gabi's role in the narrative is initially that of a background figure representing the local youth culture, providing a sense of community and normalcy. His first major interaction with the protagonist, Akira Fudo, ends with the group playfully but easily knocked into the water after they attempt to threaten him. The group later becomes more directly involved when Miki Makimura, a central character and friend to Akira, intervenes to help them when they are harassed by a police officer. This event forges a connection, and Gabi and Wamu later admit a mutual romantic interest in Miki while watching a sporting event together. Their most significant role begins as society descends into chaos and mass hysteria following the public revelation of demons. In this crisis, Gabi, alongside Wamu and Hie, steps in to save Miki from a group of attackers, proving his courage and his shift from a peripheral troublemaker to a protector. They advise her not to walk alone and she offers them shelter at her house.

Key to Gabi's story are his relationships. His bond with his friends, particularly Wamu, is the core of his existence. He shows a teasing side with Wamu, joking about his interest in Miki, and the two fight side-by-side when their group is threatened. His loyalty is tragically tested when the Makimura household is besieged by a murderous mob. As Gabi fights to defend the house and grows exhausted, he is confronted by his own friend, Babo, who has turned on him and now points a knife at him. Rather than fight back against someone he considers a comrade, Gabi offers no resistance and is stabbed in the chest, followed by more knives from behind. This moment is the pivotal point of his development, showcasing that his loyalty and heart remain intact even in the face of utter betrayal and death. His journey is one from a simple, aggressive rapper to a tragically loyal defender who is ultimately destroyed by the very chaos and paranoia he was fighting against.

In terms of abilities, Gabi does not possess any supernatural powers or demonic transformations. Instead, his notable skills are entirely human. He is a gifted and physically strong individual, talented in freestyle rapping, and capable in a street fight, as demonstrated when he helps Wamu fend off intruders. His death, alongside Wamu, Miki, and others, is brutal; their dismembered remains are infamously displayed on sticks by their killers, a grim testament to the story's unflinching depiction of violence and mass hysteria.