The next boss is Kracko. It will hide in the clouds shooting beams until it pops out. When it throws smaller units, spit them back at the eye. When it throws its barrier, it will hide back in the clouds unleashing more smaller units. After defeating it, you’ll take on its cloud form. In its cloud form, it will move about and drop lightning. When it releases small units, spit them back at it. Defeat the cloud form and you’ll use the Warp Star to go to the final land.