Type of small bipedal [[walker (robot)|]]s from the [[Metal Gear_(series)|]] series.

"Gekko was an unmanned autonomous fighting vehicle developed by AT Corp for use in ground combat. Officially designated IRVING by the United States Army, Gekko were colloquially called "lizards" after the species of small lizard with a similarly spelled name: gecko. These war machines were created using a combination of technologies used in the production of [[metal_gear_(robot)|Metal Gears]] [[metal_gear_rex|REX]] and [[metal_gear_ray|RAY]]. However, Gekko were not Metal Gears. Unlike true Metal Gears, Gekko had no [[nuclear_weapon|nuclear]] launch capability. Instead, they were more akin to infantry fighting vehicles, with multiple units acting as a coordinated team in support of ground forces."
gekko (metal gear)