A very powerful and fast drone/copter with the Plasma Goliathon in front, a Weapon Energy module inside and 6 lasers Vaporizers. This module will help the Goliathon to deal heavy damage boost over a longer duration; and if this robot falls, 6 hover blades will still move it again and you can run away at a average distance: what else?
For more details, please look at the last image. Good luck and have fun! I hope you will like it :)