I'm looking for a cartoon I used to watch when I was a kid in the late '80s / early '90s.
The story was there were some friends and there was a (?) bad guy trying to win the robot battle against them. If I recall, at the beginning they had to collect money somehow to build the robot, and the main characteristic of this cartoon is that the fight was always between the small robots that came out of the big ones and looked like exactly like the big one. So the fight between the small robots decided the battle.