Hideo Kojima received a special present from Square Enix (who makes the Play Arts KAI Metal Gear figures): a one of kind ‘Hideo Raiden’ action figure. According to Kojima, this is the only one that exists in the world.
Since you can remove the head, you can also attach it to other bodies.
Kojima placed the figure in his Metal Gear Solid 4 display cabinet.
Source: Hideo Kojima Twitter