First off, this is awesome! The fact you made this in 3D is great and not something you see often for a Metroidvania jam.
All the robot mechanics were simple yet served a purpose - there was also a mechanic I didn't realize until jumping from the spawned bot that "Legs" spawns for his special ability. (Jumping a further distance from the spawned bot - kind of like a springboard) This helped with a few of the platforming sections.
And on top of that - the puzzles were creative! (I didn't quite get the on with the 4 squares but I was able to complete the game - so it might have been a work in progress :D)
The bots all assembling into 1 was a neat effect - I did not expect it! (And it made sense for one of the puzzles lol)
I think with a bit more polish and content (improve the controls, more puzzles, character interactions) - you have a pretty fun game in your hands!
Good job! :D