The Supreme Commander Alien is a breed of alien that serve as the supreme commanders of their Colony motherships. They take orders from their queen directly, and destroy planets that the Queen orders to be destroyed.
A Supreme Commander serves as the main antagonist of the 1996 film Independence Day.
War of 1996
On July 2, 1996, a supreme commander was sent by his Queen and arrives with his Colony mothership, and hidden behind the moon and using Earth's satellites to transmit a countdown signal to when he and his aliens were to attack with their destroyers, resulting the destruction of many cities (including Washington D.C., New York City, Los Angeles, and Houston).
On July 4, 1996, the supreme commander gets his orders to attack Area 51. However, Captain Steven Hiller and David Levinson takes a captured alien attacker and gets into the Colony Mothership, where they upload a virus into the central computer of the alien mothership, renderless all alien ship to be vulernable to firepower by the military. This allows several planes (led by President Thomas Whitmore, who was a combat pilot himself) to take down the destroyer ship in order to save Area 51 and its occupants. However, as Hiller and Levinson are about to leave, the supreme commander soon learns about their presence, but they fire a nuke to mothership's core before making a close escape. This causes the mothership to finally explode, killing the Supreme Commander and the remaining aliens onboard, ending the invasion.