Cyborg Ninja

Cyborg Ninja is a non-playable character in both Metal Gear Solid and Metal Gear Solid 2: Sons Of Liberty. and also a playable character in Metal Gear Solid: Special Missions and Metal Gear Solid 2: Substance.

In MGS1, Cyborg Ninja is Gray Fox. He at first helps Solid Snake via the Codec reffering to himself as Deepthroat. He later confronts Snake before telling him that he is Gray Fox. He also lends Snake a hand when Snake is battling Metal Gear REX. He is eventually killed by REX.

In MGS2, Cyborg Ninja is Olga. She helps Raiden, reffering to herself as Deepthroat aswell before Raiden recognises the name from his research on Shadow Moses, and she then hastily changes her name to Mr. X. Later, she appears infront of Raiden and gives him an enemy uniform that he will need to infiltrate the Shell 1 Core of the Big Shell. Towards the end of the game she, along with Solid Snake, set a ploy and take Raiden hostage. Olga (as Cyborg Ninja) then reveals her true identity to Raiden.