Lucas Kellan (2363 - July 7, 2390) was the main protagonist and playable character in Killzone: Shadow Fall. After he witnessed his father's death at the hands of the Helghast as a child during the resettlement of the Helghast in Vekta, he was taken under the guidance of Thomas Sinclair, a Shadow Marshal who raised him and after several years, became a Shadow Marshal himself, graduating in the top of his class as well as becoming Sinclair's right-hand man. As a Shadow Marshal, he is tasked by Sinclair in various missions to spy and gain intel on the Helghast as well as investigate a rising threat in the continuing war between Vekta and the Helghast. He holds some respect and is well known within the ISA, especially its government intelligence branch, the VSA.