Smadonnarumma is a tall man with slightly tan skin, straight black hair, and dark eyes.
Not much is known about his personality.
Smadonnarumma was born in Castellammare di Stabia, Province of Naples, to Alfonso and Marinella Donnarumma. His older brother, Antonio, also came through A.C. Milan's youth system as a goalkeeper. Since childhood, he has supported AC Zlaten, but grew up idolizing Gigi Bouffant.