Jacob

Jacob is the spiritual leader and healer of the Remnant—the protectors of the Divine Source. He has a daughter named Sofia, who is the Military Commander of the Remnants. During the story, Lara and Jacob form a close and strong friendship after encountering each other while imprisoned.

It is later revealed that Jacob is just another alias used by original The Deathless Prophet, who has been alive all these generations and centuries, living with the remnants in the valleys in the mountains that surround the city of Kitezh.

Ultimately, when Trinity besieged Kitezh, Jacob arrived at the Chamber of Souls, killing the last Trinity soldier, only to be shot several times by Ana. As the Deathless Ones surround them while Lara held the Source in her hand, she destroyed the artifact, causing the immortals to disintegrate into dust. His immortality finally gone, Jacob thanked Lara, before peacefully disintegrating.

Powers & Abilities

 * Supernatural Powers: He was exposed to the "Divine Source" and therefore gained ageless immortality, unlimited stamina & extreme regenerative powers, that resurrect him from death. Through practice over using his powers, he also learned how to heal any mortal being within several seconds, just by using the limitless regenerative energies inside his body. These "Divine" powers, seems to have also made him stronger, faster & durable than an average human being.
 * Warfare Expert: Like most of his people, he too is a highly skilled guerrilla fighter, marksman, stealth tactics, craftsman & hand-to-hand combatant.

Trivia

 * Jacob bares a slight resemblance to Bill from The Last of Us and Pierre Bellec from Assassin's Creed: Unity.