I remember watching a cartoon, in the late '80s, for which I can't remember the name. The cartoon was surely American, had a light tone and was clearly aimed at kids.
It featured three robots as protagonists, that had no legs, could float/fly and that had a kind of TV screen as a head (the screen displayed their face). They were different colours, white, red and yellow, and lived together with the scientist who had built them and a cat.
Usually the episodes revolved about them fighting against different villains, among which there was even a robot similar to them.