The Coleopian Tank is an Alien unit that appears in Earth 2160. It is formed out of a Mantian Queen and can transform itself into an Oryctian Tank and a Gryllopian Brainer.
Strong frontline unit, it is best used against enemy vehicles not protected by anti-chemical armor, and while it is not as strong as a the oryctian, it is still a strong unit and its damage type complements the oryctian's perfectly.
This is the steely heart of the Morphid assault forces. A heavily armored organism, it has a modified internal secretion system that achieves a greater concentration of caustic substances. Since the Coleopian Tank is derived from the Mantian Queen unit, it has the ability to transform itself into Oryctian Tank and Gryllopian Brainer units.