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Species: Keronian Appearance: A Keronian with a mix of blue and gray skin. He wears a red hat, a gray headset, and gray gloves. He has red pupils and a tail. Personality: Active and very mischievous. He possesses insane fighting spirit and eccentricity. He is a total wildcard character. Features: Aruru's younger brother. He loves playing pranks.
Species: Keronian Appearance: A Keronian with a mix of red and gray skin. He wears a blue hat, a gray headset, and white gloves. He has blue pupils. Personality: Serious and blunt. He possesses a certain degree of madness. Features: He is serious and has a strategic combat mindset. He is somewhat active. He is Deruru's older brother.
Keroro Keron Army Settings
Setting materials including rank charts, Keron Army configurations, bases, etc. (Revised)
Keroro Universe
Anime-based original setting guide (Revised Edition)
Sgt. Frog Universe
A brief(?) summary of the worldbuilding (Still a work in progress, sorry! T_T)
Keroro World Introduction (WIP)
Planet Keron / The 1st Assassin Unit: Vampire Unit / Pekopon / Keron Army Government / Maronians / Non-Keronians / Angol Race
The situation is open.
Release Date 2026.08.16 / Last Updated 2026.10.05