80s movie about 5 robots that make 1 big robot

When giant robots conquer the Earth, a lone man finds himself on the run from a marching horde of mechanical titans. He soon finds himself face-to-face with a redheaded engineering genius and one of the massive invaders. Guess which one he makes a love connection with?

1985. USA. Directed by Fabio Roberti. Produced by DirectArt Ltd. 16mm. 4 min.

Rodney Copperbottom is a young robot inventor who dreams of making the world a better place, until the evil Ratchet takes over Bigweld Industries. Now, Rodney's dreams – and those of his friends – are in danger of becoming obsolete.

"Big Guy" is an elite fighting robot, protecting New Tronic City from danger, whether from earth or from outer space. When the Big Guy is decommissioned, however, a smaller, childlike robot named Rusty is brought on to take its place. But it is clear that Rusty needs Big Guy's help, and it is up to the two of them to help keep the world a safer place.

Two squabbling robot brothers battle bloodthirsty kaijus, supernatural disasters and mundane personal issues as they adapt to the trials of growing up.

After being replaced by an autonomous cleaning robot, this high school janitor takes it into his own hands to get his job back, only to discover the robot's secret plan to take over the world...

An anthology of various tales told in various styles with robots being the one common element among them.