Use the earthquake ability (shake the pad left to right several times) and this will knock him out of the head so you can then fight him.
After taking some damage he will then jump back on the top, dodge the lasers and smoke for a bit then a earthquake ability will drop (looks like a planet earth).
Have one of the heroes run over it to pick it up, rinse and repeat. Should take two-three earthquakes to finish the fight.
Hope that helps