Rikki emerges as a professional wrestler and bodyguard within the post-apocalyptic factions of *Evil Town*, aligning with Section C after its women face targeted aggression from Section A. Renowned for raw physical power and combat expertise, she spearheads defense against hostile incursions, notably from Sections A and B, while maintaining a fiercely protective dynamic with Section C’s leader, Aila Mu.

In the manga narrative, she contributes to tunnel-digging operations to escape the buried city, frequently illustrated in minimal attire during these sequences. Her demise unfolds during an escape attempt: investigating a suspicious noise—later revealed as a Section B diversion—she is fatally ambushed after Kawamori, a former enforcer, distracts her with a thrown rock. The anime adaptation alters this distraction to Kawamori urinating prior to the attack.

As Rikki Muso in the *Shutendoji* spin-off, her lineage traces back to the oni Goki, granting enhanced strength she views as her destined legacy. Here, she allies with protagonists to combat supernatural threats, confronting cultists and demons. During a temple clash, she intercepts a lethal energy sphere meant for Jiro Shutendoji, mirroring sacrificial tropes common to heroic narratives.

Her consistent traits—combat mastery, unwavering loyalty, and self-sacrificial impulses—anchor her portrayals. Visual designs alternate between blondish hair (*Shutendoji*) and blue hair (*Evil Town*), paired with attire spanning leather armor, wrestler gear, and sparse clothing during labor-intensive tasks. Documented appearances conclude within these established storylines.