Gaga serves as a crew member aboard the Quin Zaza. He possesses an imposing physical presence, being tall and brawny with pale skin, a bald head, and small eyes. He consistently wears the Quin Zaza uniform: a blue jacket, blue trousers, and black boots, always paired with an orange scarf around his neck.

Despite his intimidating appearance, Gaga exhibits a reserved and soft-spoken personality. He demonstrates intelligence but becomes easily flustered when receiving compliments. His most notable skill is an exceptional artistic ability, allowing him to produce highly detailed, life-like drawings of dragons and crew members entirely from memory, a talent recognized and valued within the crew.

His artistic contributions extend beyond portraiture. Detailed sketches of dragons aid in identifying species and behaviors, such as documenting color shifts during mating seasons, proving crucial for the crew's understanding. A notable incident involves his realistic drawing of a nude Vanabelle, which contrasted sharply with the amateurish attempts of other crew members, further highlighting his prowess.

Gaga's relationship with Brno Massinga, a wealthy dragon researcher and captain of the Oboro Casca, is significant. Brno deeply admires Gaga's artistic skill and photographic memory, leading him to invite Gaga to stay aboard the Oboro Casca, underscoring the professional respect Gaga commands beyond his own crew.