Goemon, a hot-blooded Edo native driven by an unwavering sense of justice and a quick temper, embodies the legacy of the legendary thief Ishikawa Goemon, stealing from corrupt elites to aid the oppressed. His signature weapons are an array of kiseru—traditional Japanese smoking pipes repurposed for combat.

Originally a castle-infiltrating ninja thief, he gradually transforms into a bold protector of Edo, clashing with formidable adversaries to shield the city and its people. His fiery spirit, relentless determination, and uncompromising dedication to battling injustice define his character.

His ventures feature a steadfast band of allies: Ebisumaru, his eccentric, rotund ninja companion and closest confidant; Yae, a kunoichi operative from the covert peacekeeping force known as the Secret Investigational Ninja; Sasuke, a clockwork automaton ninja forged by the reclusive Iga-based inventor Monoshiri Ojisan, whose mechanical genius frequently aids their missions.

Regional adaptations once rebranded him as "Kid Ying," though later iterations reclaimed his original name. Over time, his arc transitions from straightforward thievery to nuanced heroism, reflecting a layered evolution in his role as Edo’s guardian.