Robot is an android of advanced, experimental technology designed to carry out combat and rescue missions.

Robot seem to develop their own free will, as well as loyalty and a sense of friendship towards human soldiers they work alongside.

Robot, nicknamed Joe and designed by Ross Andru, first appeared in Star Spangled War Stories #101 (published in late 1961, with a cover date of February–March 1962).

1, created by Kanigher and artist Pepe Morino Casaras, debuted in Weird War Tales #101 (July 1981).

Robot, designed by Lex Luthor for use by the United States military, was introduced in Batman Confidential #4, by Andy Diggle and Whilce Portacio.

Robot has made limited appearances in media outside comics, with James Arnold Taylor and Sean Gunn voicing him in Batman: The Brave and the Bold and the DC Universe animated series Creature Commandos respectively.

Joe is a humanoid, mannequin-like robot with a visible control panel, as well as eyes and an indication of facial features but no mouth.

[3] For his first field experience, Joe is assigned to act as assistant to the Ranger unit Corporal named Mac.

After Prof. Zurin upgrades the robot to respond to light signals as well, Joe and Mac engage on several more adventures on or near Dinosaur Island.

[4] During one mission, Joe and Mac encounter a giant "TNT Robot" developed by the military of Japan.

[6] Some time after the destruction of Mac, Professor Thompson leads a think tank at MIT that develops a new version of the G.I.

1 is deployed to a Pacific island alongside the Marines to fight the Japanese military and placed under the control of Sergeant Coker.

Apparently constructed using the original World War II era programming, it has a new body made of components used by Maxwell Lord when his consciousness was contained in an android.

Robot of unknown origin appears in the 2008-2009 The War That Time Forgot miniseries written by Bruce Jones, where it is known as "Lord Job", but calls himself "Joe".

This version can speak and has bright red eyes, but is otherwise of a similar appearance to the earlier models, particularly Joe.

Robots are all fully autonomous mechanical soldiers, capable of making decisions and adapting to changes in their environment.

No built-in weapons are apparent, but both are capable of using firearms like an ordinary soldier and can withstand direct fire from small arms.

Their left arms consist of a fully functional machine gun, which can fire bullets, mini-torpedoes, and small anti-aircraft missiles.

#6.1, unlike its predecessors, can communicate verbally, appears to have a sophisticated artificial intelligence system, and is equipped with various weapons, including a minigun as its left arm, an automatic grenade launcher mounted on its right shoulder and magnetically accelerated anti-personnel caltrops deployed from its chest cavity.

Its role during missions is to monitor its fellow Rooks, who are telepathically linked thanks to an alien DNA infusion derived from Starro.