Acronym for Ground Effective Reinforcement of Winged Armament with Locomotive Knee-joint. It refers to the mid-conversion mode of a variable fighter in which the aircraft partially transforms into the humanoid Battroid mode. In GERWALK mode, the variable fighter possesses some functions of a fighter jet aircraft and some functions of the humanoid battroid mode. Most often the GERWALK is used as a low-level air combat unit, similar to the traditional role of an attack helicopter.