Metal Gear Solid 2 Nickname: Otacon.
Real Name: Hal Emmerich.
Known Relatives: Emma Emmerich (Sister).
Weapon Of Choice: None.

   

Formerly the leader of the Metal Gear REX development project, but since the Shadow Moses incident, he has joined with Snake to form "Philanthropy", an organization dedicated to destroying Metal Gear in all its forms. Saves Snake's mission data on the Tanker in Metal Gear Solid 2: Sons Of Liberty, and provides helpful hints and Japanese proverbs to make up for Mei Ling not being there.

Metal Gear Solid 2 Nickname: None.
Real Name: Olga Gurlukovich.
Known Relatives: Sergei (Father).
Weapon Of Choice: USP Gun.

   

Shows great potential as a soldier, and has been raised in Sergei's army as one of its soldiers since she was a small child. Solid Snake is the first to meet with her in Metal Gear Solid 2: Sons Of Liberty when he fights her in his first battle in the Tanker Episode.

Metal Gear Solid 2 Nickname: Solid Snake.
Real Name: Dave.
Known Relatives: Liquid Snake (Brother).
Weapon Of Choice: M9/USP Gun.

   

The legendary hero who has thrice saved the world from the menace of Metal Gear in the past. An infiltration expert who always completes his mission no matter how difficult the odds. Former member of FOXHOUND, now a member of "Philanthropy", an anti-Metal Gear group.

Metal Gear Solid 2 Nickname: Revolver Ocelot.
Real Name: Shalashaska.
Known Relatives: No Known Relatives.
Weapon Of Choice: Revolver.

   

Russian. A former member of FOXHOUND. Lost his right arm in a clash Fought Snake during the Shadow Moses incident. Lost his arm but successfully flees the place. A gun fanatic who prefers revolvers.

Metal Gear Solid 2 Nickname: Rose.
Real Name: Rosemary.
Known Relatives: No Known Relatives.
Weapon Of Choice: None.

Raiden's girlfriend. She is employed by the army as a data analyst, and supports Raiden in his mission by saving mission data via the Codec. Takes the place of Mei Ling from Metal Gear Solid.

Metal Gear Solid 2 Nickname: Colonel.
Real Name: Campbell.
Known Relatives: No Known Relatives.
Weapon Of Choice: None.

Strategic commander of the FOXHOUND special forces unit. Commands the mission to infiltrate the Big Shell, and supports Raiden over the Codec.

Metal Gear Solid 2 Nickname: Solidus Snake.
Real Name: Unknown.
Known Relatives: None (Same Codename As Snake).
Weapon Of Choice: High Frequency Blade/Tenticles.

   

Solidus shares the same codename as Solid Snake, however (as far as we know) doesn't have any connection with him whatsoever. Solidus is the final boss in Metal Gear Solid 2: Sons Of Liberty.

Metal Gear Solid 2 Nickname: Raiden.
Real Name: Jack Raiden.
Known Relatives: No Known Relatives.
Weapon Of Choice: M9/USP Gun.

   

A member of the special forces unit FOXHOUND. Raiden has no experience in real-life combat situations, but his skills as a soldier have been honed to the highest levels through VR simulation training. The infiltration of the Big Shell is his first actual mission. Sees Snake as a father-like figure.

Metal Gear Solid 2 Nickname: EE.
Real Name: Emma Emmerich.
Known Relatives: Hal Emmerich (Brother).
Weapon Of Choice: None.

   

Otacon's sister. Genius in the field of computers. She almost drowned in a family swimming pool when she was a child and has been scared of water ever since. Hasn't seen her brother since she was a child.

Metal Gear Solid 2 Nickname: None.
Real Name: Fortune.
Known Relatives: No Known Relatives.
Weapon Of Choice: Electro-Pulse Gun.

   

Dead Cell member. Just like her name, she has a lot of luck on the battlefield. Raiden first meets up with her in the Big Shell (Plant Episode) facility.

Metal Gear Solid 2 Nickname: Fatman.
Real Name: Unknown.
Known Relatives: No Known Relatives.
Weapon Of Choice: USP Gun/Explosives.

Dead Cell member. An explosives expert wearing a bomb blast suit.

Metal Gear Solid 2 Nickname: Vamp.
Real Name: Unknown.
Known Relatives: No Known Relatives.
Weapon Of Choice: Knife Blade.

   

Dead Cell member. A knife specialist with high physical capabilities born in Romania.