Ah
My characters are
Robot (a robot who was originally evil but reprogrammed to be a good guy)
Robot replacement (the guy who would replace robot as a bad guy)
Explosive robot (do not press the button on his chest, I don’t know what will happen. Despite being evil on the same side as Robot replacement, he is actually pretty innocent minded)
Robot dweller (a strange species that is more advanced than humans, it’s actually unknown if they are really robots or not but they can be male or female.)
All from top to bottom