The Sorrow

The Sorrow appears in the game Metal Gear Solid 3: Snake Eater. He is the "Spirit Medium Soldier" of the Cobra unit.

Although he has no actual unique combat abilities like the other Cobras, The Sorrow is gifted with the powers of a medium. He is able to summon the dead and assume their combat abilities by bringing their spirits into himself. Communicating with dead soldiers also gives him several advantages during a battle, such as learning of enemy positions. Like the other Cobras, his codename reflects the emotion he brings to the battlefield.

History
The Boss and The Sorrow fought together as part of the Cobra unit during World War II and participated in the Allied landing at Normandy in 1944. The two had a child together (Revolver Ocelot, revealed in a secret radio conversation inside the Chyomaya Peschera cave area, when coupled with the Boss's soliloquy near the end of the game), who was taken from them by The Philosophers. After the War, he worked for the Soviet Union and was ultimately killed by The Boss during a covert mission at Tselinoyarsk in 1962.

In the game, set in 1964, The Sorrow appears as a ghost. Several times, he is seen crying blood. Whenever he does, rain falls from the sky. He frequently appears during the games' first-person view cinema sequences, where he can be seen observing Snake and the events of the game, and occasionally offering helpful hints, like a key radio frequency. The Sorrow's corpse can also be seen during a secret R1 scene after Snake is thrown off of the Dolinovodno bridge, after Snake bandages himself.

During an apparent nightmare, The Sorrow forces Snake to walk down a seemingly endless river. So Snake will "feel the sorrow of those whose lives he ended," he makes him encounter the ghost of every single person killed during the game. The ghosts of fallen Cobra unit members also appear. The Sorrow also prophesized that Big Boss would be killed by his own "sons" (Solid Snake, Liquid Snake, Solidus Snake).

The Sorrow may have been responsible for summoning the lightning that killed Colonel Volgin.