Mother (Earth-5875)

"Mother? I've turned the cooling unit back on. Mother?! The ship will automatically destruct in 5 minutes. You bitch!"

- - Ellen Ripley and Mother

Mother, commonly referred to simply as "Mom", was the shipboard Artificial intelligence of the Weyland-Yutani Corporation freighter Nostromo, responsible for operating the ship's mainframe and background systems automatically, as well as waking the ship's crew from their cryosleep during emergency situations.