Penguin Teacher serves as an animal coach at the dance school Pretty Top, instructing Coach Mascots and Pair Charms. This light green penguin sports aqua green hair obscuring his orange eyes and maintains a close partnership with Yamao Yamada. The pair charm Vivvy frequently scratches him. His responsibilities encompass managerial tasks and mentorship within the Prism Show system.

In *Pretty Rhythm: Aurora Dream*, he supports Prism Star training alongside Yamada at Pretty Top, overseeing animal coach development and school operations. During *Dear My Future*, he authorizes Mia’s enrollment at Pretty Top and disciplines animal coaches by pelting them with tubs.

A pivotal backstory emerges in *Pretty Rhythm: Rainbow Live*. He previously partnered with top Prism Star June Amou but faced punishment from Peacock after allowing June to perform post-new moon event—nearly causing a Prism Show disaster. Banished to Mascot Hell, he separates from Yamada, reuniting briefly before confinement erases his memory of her. Under the alias "Tanaka" at Edel Rose, he aids An in investigating stolen sweets.

He appears across spin-offs and films. As Prism Association Chairman in the *King of Prism* series, he dons white hair. A statue honoring his partnership with Yamada stands in Edel Rose’s bath. He resurfaces in Mascot Hell during *Pripara* Episode 19 and the *Pripara Movie*, echoing his recurring confinement motif. The film *Pretty Rhythm Movie: All Star Selection - Prism Show☆Best Ten* features him presenting iconic Prism Shows.

Throughout seasons like *All Star Selection*, he consistently appears alongside Yamada or engaged in Prism World’s administrative and mystical affairs, bridging storylines from mentorship to narrative-critical backstories.