I love those tiny toys but I am lazy and I have no idea what to write in this description field... Happily the Net is my friend, here is a short description from Raving Toy Maniac:

From http://www.toymania.com:

"Shipping in March 2002 in the same format as the Special Forces Kubrick series (randomly packaged in single-figure boxes), these officially licensed Metal Gear Solid 2 Kubricks feature authentically detailed characters captured in the popular Kubrick building-block style, complemented with realistic costume pieces and weaponry as portrayed in the upcoming Playstation 2 epic! Measuring approximately 2.5" tall, and boasting an impressive eight-point articulation, this first series includes: Solid Snake, Hal Emmerich, Revolver Oceleot, Olga, Gurlukovich Soldier in Woodland Camo, Gurlukovich Soldier in Tiger Camo, and a seventh mystery character! Metal Gear Solid 2 Kubricks are on the fast-tract to international popularity and should appeal to video game fanatics and collectors of Kubricks alike."

As you can see a seventh -secret- character is mentionned here, and that would be Raiden. But there is also another chase figure which is the Night Vision Soldier.