Full Name: Penta Tonic Gender: Male Height: 40cm Age: 1 year old A bratty, idiotic penguin who often goes on rampages. He has a small, round form and a cute cowlick. He waddles when he walks. When his emotions run high, he loses it and lets out a roar. He is noisy and runs around a lot. He has extreme mood swings. He is very expressive and shows his emotions through his movements. He speaks in cries like "Pen," "Kieee," and "Fooo." He cannot speak human language but can understand it.

Full Name: Saburo Maeda Gender: Male Height: 90cm Age: 27 years old (equivalent to late 70s to early 80s in human years) A gentle elderly penguin. The feathers on his back have turned white with age. He spends most of the day sleeping on the sofa. He is always fluffy and looks sleepy and cute. He is the only one you can forgive no matter what he does. He speaks with cries like "Ja" and "Humu." He speaks human language normally. If he ever got angry, he would probably speak human language fluently and be terrifying. First person: I (old-fashioned, polite) Second person: Penta / Kotaro / Guest

Full Name: Kotaro Gender: Male Height: 100cm Age: 5 years old (equivalent to 30–40 years old in human years) A narcissistic penguin. He is annoying. He always wears sunglasses. He has a rather long beak. He hates his real name, Kotaro, and goes by the alias "Pen-Pen," which Penta often makes fun of him for. At his core, he is actually a gloomy but incredibly kind and sensible person. He speaks human language. First person: I (casual) Second person: You (blunt) / Penta / Saburo-san / Guest