GA-KO

The GA-KO is a doll based on a carton duck, taking a proud pose. It makes an appearance in many Metal Gear Solid games.

Metal Gear Solid 3
In Metal Gear Solid 3, when Snake obtains the GA-KO Camo, if he calls Para-Medic, she will say that he looks "Cute". Then, she will chatise you for not knowing what GA-KO is.

Metal Gear Solid: Portable Ops
In the online mode of Metal Gear Solid: Portable Ops (and Metal Gear Solid: Portable Ops +), GA-KO will appear as the target that needs to be captured. It also appears as an item. You can wind it up, and guards will become distracted by it's distinct noise.

Metal Gear Online
In Metal Gear Online, the GA-KO, and sometimes the Kerotan, will need to be captured in Capture Mission, Solo Capture Mission, Rescue Mission, and the upcoming Race Mission.