Garlonuss

Answer: They used a lot of practical trickery. In the bar scene where Roger is smashing plates on his head, they had a robot arm with a suction cup that would grab a plate and smash it on a metal rod where the head would be. The Weasels' guns were suspended by wires (watch the guns as they carry them. The movement is more characteristic of being hung than held). They had a robot arm that they could place a drink in to make it look like Roger was drinking a shot of whisky. This was used in Maroon's office (while Roger is sitting on the chair), and in the bar (when Eddy pulls the whole "You don't"/"I do" trick). Watch the scene where Roger takes the drink in the bar. Right after taking the drink and before the cut, his arm very conspicuously stays in a somewhat unusually rigid angle. They had to keep the arm there to cover up the robotic arm. They also had a little buggy for Bob Hoskins to ride around in when he was in Benny. The wheel that Hoskins holds was useless on the buggy and the vehicle was controlled by someone else.

Garlonuss ★

Answer: There was also a giant sized doll of Roger Rabbit, Bob Hoskins would use it as a reference point or as stunt doll when he had to grab Roger. Charles Fleischer, the voice of Roger Rabbit, would stand off camera in costume saying his lines.