Weller endured exhaustion and dehydration through two Robo-films.
Peter Weller's initial suit-ups were 9-10 hours long but they eventually got it down to about an hour or so on the first film.
Designer Rob Bottin delivered the suit at four in the morning after weeks of back-and-forth about the design. Weller, who had been training to wearing by walking in American Football gear, was not pleased. 'He just sat there, muttering, "This ain't cool, man. This ain't cool at all!,” remembers Bottin.
Weller eventually worked it out. “My trainer said, ‘Listen, we'll slow everything down. We'll let the weight of the suit work for us.’
That turned out to be a brilliant idea, because this made RoboCop much more pathetic. Because I started to walk on the ball of my foot, instead of on the heel, his step changed. He was no longer a streamlined, ultra-hip man of steel, but a somewhat unsure, more human character.”