深井 零

Lieutenant Rei Fukai is a 2nd Lieutenant (later 1st Lieutenant) in the Special Air Force (SAF), the reconnaissance unit of Fairy Air Force (FAF), assigned as the pilot of B-503 "Yukikaze." Diagnosed by Edith Foss as having a tendency toward social rejection, he seldom shows interest in any objects other than B-503 "Yukikaze." He only showed mild interest towards a few, namely James Bukhar, Edith Foss, and Tom "Tomahawk" John.