Royal Penguin is an anthropomorphic Friend representing her species within Japari Park and a core member of the idol unit PPP. Her striking appearance features primarily white hair marked by a prominent black stripe across the back, accented with pink and yellow-tipped fringe and yellow and orange tufts. Her red eyes stand out against this palette. She wears a white hoodie with black outer arms, flipper-like mittens, thigh-high white stockings featuring lace, and pink shoes. Distinctive accessories include black twin-tails secured by orange bands, white headphones, and a collar adorned with yellow strings ending in bead-and-footprint ornaments.

She performs musically alongside fellow penguin Friends in PPP: Emperor Penguin, Gentoo Penguin, Rockhopper Penguin, and Humboldt Penguin, participating in live events and activities throughout Japari Park. Royal Penguin appears across multiple official media, including the original manga cover art, the first anime season where PPP debuted during a live event, and the second anime season. In season 2, she features prominently alongside Emperor and Gentoo Penguin in promotional key visuals, confirming her active role in the park's ongoing performances. Across these appearances, she is consistently depicted within group settings and her PPP activities, with narrative focus remaining on her role within the unit.