Sonnorigun (also confused with P man) is a mascot created by Sonnori and is also an easter egg character in both White Day: A Labyrinth Named School (2001) and a minor character in the multiplayer expansion Oh! Jaemi.
Sonnorigun appears as a bald short character with few hairs coming out of the top of his head, he wears shorts and a white shirt, he appears in the Vending machine which be be unlocking using P's Vending Machine Key and also appears on a construction sign in the New Building of Yeondu High School.
He doesn't appear in the remake ver, but His fan art is in the picture on the 1st floor hallway in the Main Building, Section 1 of the PC/PS4 version. (In the Mobile version, another artworks selected from "Yeondu High School Art & Class motto contest (2015)" were used)
- Passman is another mascot of Sonnori.
In the White Day Original, It was eventually removed but it's textures were leftover in the data files.