Goki, a non-human ally, partners with Jiro and Senki to combat supernatural threats across timelines and dimensions. Skilled in battle and fiercely loyal, he confronts oni and other adversaries, employing strategic teamwork to overcome challenges like a swarm of flying oni in a surreal pink dimension. When Senki vanishes through a time portal, Goki insists on immediate pursuit, prioritizing unity over caution to uphold their mission. His situational awareness emerges during encounters in ancient Japan, where he intervenes to shield historical figures like Tsuna Watanabe from unintended harm, balancing urgency with ethical restraint.

Armed with divine weaponry resistant to supernatural forces, Goki adapts tactically to hostile environments—battling in cryogenic chambers, dodging poison gas, or stabilizing collapsing spacecraft. His defiance of orders to protect Jiro underscores a moral compass that values trust over blind obedience. Linked to time-displacement incidents from experimental mishaps, his past intertwines with dimensional travel and historical disruptions.

Later challenges, including cybernetic enhancements and confrontations with figures from his history, deepen his narrative beyond combat. Engaging in battles spanning eras, Goki’s journey reflects themes of redemption and purpose, anchoring his resilience and adaptability within a broader existential arc.