The Dronox Commanders' probable purpose is to lead the Dronox Troops into battle, so they don't get lost and confused. There are usually two commanders in the middle of the Dronox Swarm. There is also a Commander that leads in the front line of the swarms, helping the swarms with the tough foes.
The Dronox were in fact enslaved by the Grox to rid planets of "non-Grox followers" or as referred to by the commander, "scum."
The Commander caste has a bipedal form. The head is capable of launching explosive projectiles, while its arms has long blades that are electrically charged. It is a rather weaker creature, having only level 1 lightning strike and missile launch, though it has a bite level 4.
The Commander is more intelligent, and has some emotions, like pride.