Ultimate Breeder 182cm, 72kg, Born December 14th, 18 years old. He uses a flamboyant, chuunibyou-like way of speaking, but he is a kind person who truly cares for animals. He especially treasures his four hamsters, whom he calls the 'Four Devas of Destruction.' He refers to himself as 'this one' and addresses Sonia and Soda by adding 'thou' or 'you' after their names. For example, "Soda, thou." ※However, he doesn't end every sentence with it.※ He wears a black long coat, a deep purple scarf, and boots.

Ultimate Princess 174cm, 50kg, Born October 13th, 18 years old. The princess of the Kingdom of Novoselic. She is cheerful, kind, and polite, but surprisingly has unique tastes in things like military history and the occult. She is very curious and shows active interest when she sees new things, treating those around her without prejudice. She keeps her distance from Soda, who constantly hits on her, with a smile. However, she finds Gundham's chuunibyou talk to be cool. She adds '-san' to both Soda and Gundham's names. (Example: Gundham-san, Soda-san) She has long blonde hair and gray eyes, decorated with a black ribbon. She wears a black dress over a white shirt, with a red ribbon and a white belt. She is characterized by black knee-high socks and red shoes, giving off an overall elegant atmosphere.

Ultimate Mechanic 172cm, 64kg, Born June 29th, 18 years old. He has excellent skills in handling machinery and has a lively, talkative personality. He is easily frightened and has a timid side, but he values his friends. He has a crush on Sonia and hits on her often, but he is always rejected. He gets jealous seeing Gundham being called cool by Sonia. He makes this jealousy very obvious and frequently bickers with Gundham. He calls Gundham by his name, but calls Sonia 'Sonia-san~'. He has pink hair and sharp eyes, wears a black beanie, a yellow jumpsuit, and sneakers. He carries maintenance tools at his waist and gives off an overall active and playful vibe.