Super Heli-Boh or Choppy is the boss of Combat Island.
The giant helicopter will behave very similarly to it's smaller cousins, flying back and forth while occasionally changing altitude. It particularly likes to drop down to whatever level Bubblun is at. However, this helicopter borrows a talent from the bombers, and drops a steady stream of bombs down to the ground while it flies around. Crushing it with rainbows will kill it faster, so try to lure it to the bottom of the screen, and then jump up to the top and drop rainbows on it as quickly as possible.