Metal Gear Solid V: 9 Insane Spoilers That Just Got Leaked

2. The Final Boss Is A Psycho-Mantis Controlled Metal Gear

Though the details of how the final boss fight unfolds are still up in the air (because the guide lists the Mission 50 boss fight as being for Extreme difficulty only), it does say that the final story mission is against the Metal Gear known as the Sahelanthropous, as controlled by Psycho Mantis. An image of the boss fight was uploaded by the original leaker, which shows Mantis floating in front of the giant robot, and another strategy guide leak shows that the Metal Gear ST-84 can also stand up straight to resemble a humanoid. Needless to say, the setting looks epic, and the addition of Mantis into the mix should make for yet another supremely trippy, unforgettable MGS final boss.