ED-209

The ED-209 made a cameo appearance in Terminator vs Robocop.

Information on the cameo
The Enforcement Droid, Series 209 or ED-209 is a fictional robot in the RoboCop franchise. The ED-209 serves as a heavily armed obstacle and foil for the series' titular character, as well as a source of comic relief due to its lack of intelligence and tendency towards clumsy malfunctions.

For instance, during a boardroom demonstration by Dick Jones of ED-209's "disarm and arrest" procedure with a board executive named Kinney as the test subject, in which Kinney is given a pistol and told to point it at ED-209, ED-209 fails to recognize that Kinney has dropped his weapon and blasts him to death in over-the-top fashion with its automatic cannons. Later, it is shown that ED-209 cannot climb or descend stairs as it tumbles trying to chase RoboCop.