Cannon

 is a warrior of the Overlords.

Background
It costs 4000 Resources and four Butanium to build this piece of long-range artillery. Any unit with a Building skill level of two and a Construction skill level of two can make a Cannon, provided the necessary research has been done at a Gunner Tower. The Cannon is a fully automated weapon of longrange destruction. Though it requires an extremely long time to load, this piece of heavy artillery hurls high-explosive shells over walls into enemy installations, doing major damage to anything within range of the blast. The Cannon moves slowly but can be remarkably effective against towns and fixed troop positions.