Team Mongoose (チームマングース?) is a team in Majisuka Gakuen 3 composed mainly of inmates of Prison HOPE who belong to Block E and led by An'nin. They are the primary rival of Team Habu who is led by Nobunaga, and later by Paru.
- An'nin - Team Leader
- Koko dake Sisters (ここだけ姉妹, lit. "sisters only here"?)
|Team Habu||Paru | Nobunaga | Peace | Nanashi | Daasu | Nantene | Uruseeyo | Tetsuo | Komimi|
|Team Mongoose||An'nin | Miyu | Bunker | Messhi | Yagi | Sudachi | Shokkaku | Jovijovich|
|Other Characters||Yoyogi Keita | The Director | The Warden|