It just occurred to me while watching Men In Black......

What if the Volge are in fact tiny little aliens living inside their organic armour?

Sh*t scared of the whole universe and that's why they are hostile.. But if you remove the armour they are just teeny tiny aliens like the guy in the robot suit in the first Men In Black....



And they are the only ones in the game that will chase you a good distance if you hit them or shoot them, or if you run off they'll linger till you get back in the zone of the mininap and chase you again.