Chawoo is the dedicated butler to Cocoloo, a Platinum Princess candidate from the Spirit World. As a ghost race member, he belongs to a distinct species separate from human spirits, characterized by unique biological and cultural traits. Remaining invisible to most characters until voluntarily revealing his presence midway through the series, Chawoo operates discreetly to support Cocoloo’s duties within the Princess Academy. His shapeshifting ability allows him to assume her guise when required, aiding her in challenges and curriculum-related tasks. During a critical mission, he collaborates with Cube and Gaga in a miniature expedition to cure Balizan of an internal affliction, echoing a "Fantastic Voyage" scenario.

Chawoo’s unwavering loyalty and adaptability mirror the Spirit World’s broader ethos of maintaining cultural distinctness while engaging with other realms. His role highlights the series’ focus on interspecies cooperation, illustrating how non-human entities navigate shared challenges without compromising their identity.