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Mangusta is the butler and tutor of Longchamp. He is the only one who takes the Families' rivalry seriously and greatly tries to discourage Longchamp from being friends with Tsuna. He also the holder of the Desolation Bullet, which he uses to shoot Longchamp with, or anyone else for that matter to agree to Longchamp's wishes.
- Like other members of the the Tomaso Famiglia, he is named after a car of the De Tomaso company. He is named after the De Tomaso Mangusta.
- His name in Italian also means "mongoose."