An APU is an "armored personnel unit" in the Matrix series of films. The APUs are charged with the greater part of the defense of Zion. The Matrix series consists of the films The Matrix, The Matrix Reloaded, and The Matrix Revolutions, all written and directed by the Wachowski brothers. ... In the The Matrix films, Zion was the last human city, which existed deep underground to hide itself from its enemies as well as for warmth. ...

Usage

The APU in the city of Zion plays pretty much the same role as a tank in modern warfare. An APU is a bipedal robotic tank similar in design and function to mobile suits such as those seen in the various Gundam anime series. The pilot sits in a cage-like cockpit and controls the APU with foot pedals and flexible control arms which move the APU's arms and aim and fire its weapons. Mobile Suits are humanoid weapon systems in the Gundam anime series. ... Gundam is one of the longest running meta-series of anime featuring giant robots. ... Jump to: navigation, search A scene from Cowboy Bebop (1998) Anime (アニメ) is Japanese animation, sometimes referred to by the portmanteau Japanimation. ...

The APU is armed with two heavy-caliber machine guns mounted on its arms, which are fed by large ammo cases in the back of the unit. The guns are rather effective against the Sentinels, for it commonly requires only one direct hit to disable the octopus-like machines. A machine gun is a fully-automatic firearm that is capable of firing bullets in rapid succession. ...

Perhaps the greatest weakness of the APU is the lack of automatic targeting systems, relying solely on its pilot for shooting down the fast and maneuverable Sentinels. Reloading is another disadvantage, since the guns have to be reloaded manually by humans who are vulnerable to the "squiddies". The pilot is also very vulnerable to attack, as the APU's cockpit has no armor. --198.53.93.38 01:13, 22 October 2005 (UTC)