The Major in the TV series Manifest is Major-General Kathryn Fitz, a high- ranking officer in the United States Army who leads a secret government operation studying and attempting to weaponize the anomalies associated with the passengers of Montego Air Flight 828. She is one of the secondary antagonists in the series, known for her role in capturing and experimenting on the passengers to exploit their "callings" and the mysterious effects they experience. The character is portrayed by actress Elizabeth Marvel

. Kathryn Fitz, aka The Major, is depicted as a specialist in psychological warfare with extensive experience in covert operations. Her storyline involves stealing scientific research related to the passengers' condition and using it to further her agenda. She is eventually accidentally killed by Saanvi, one of the passengers, during a confrontation

. In summary, The Major is a key antagonist who represents a government force trying to control and weaponize the supernatural phenomena linked to Flight 828's passengers