Goemon Ishikawa XIII serves as a core member of Lupin's crew, providing martial support through his exceptional swordsmanship. He wields the legendary Zantetsuken blade, capable of slicing through virtually any material, a skill dramatically showcased when he cuts open a missile while standing atop it during a pursuit.

His personality embodies traditional Japanese values, marked by a strong sense of honor and minimal verbal expression. He frequently utters his signature phrase – "I have cut yet another worthless object" – after destroying inanimate objects or adversaries' weapons rather than killing opponents. This narrative reveals moments of humor through cultural references; after watching a samurai film, he repeatedly quotes its dialogue, confusing others.

He participates in the antique car race from Madrid to Paris alongside Lupin and Jigen, motivated by assisting Lupin's goal to obtain Napoleon's dictionary, which holds clues to the Lupin family treasure. Throughout the race, he engages in combat against various pursuers, including intelligence agents and military forces representing G7 nations.

Scenes highlight his interactions with other core characters. He coordinates tactically with Jigen and occasionally shows visible frustration with Lupin's antics. His peerless combat skills prove instrumental in overcoming obstacles during the cross-continental race. His portrayal here remains consistent with established traits: peerless swordsmanship, stoic demeanor, and loyalty to Lupin's objectives despite occasional annoyance.