Sorry for the late reply and thanks! The idea was that it would be invulnerable in sphere mode,but are easily tricked into falling off ledges.

Great idea and great bot ) 

Is it invulnerable in sphere mode?

This is really cool. Looks like it's from Gradius III.

Great design!  You seem to have put a lot of thought into the way the robot operates.

Thank you! It shows up at a different speed here than it does on my desktop.And it runs at a different speed on my desktop than in Graphics gale.

Any suggestions for creating a reliable framerate?

 Nice animation!  5/5