There are two basic types: static defense and deployable field turret. Hyperion Turrets are computer controlled static defense weapons that can operate independently of human controllers. When a target they perceive as an enemy enters their line of sight they will turn to track it and open fire. In Borderlands 2 these can be seen providing point defense in Hyperion-controlled part of the Thousand Cuts, at the entrance to 'Aggregate Acquisition in The Highlands, on top of the money train during the The Pretty Good Train Robbery mission in Tundra Express, and a few can be found in Opportunity. In Borderlands: The Pre-Sequel, several can be seen dotted around the Helios Station, and one on top of the Harren Lockup in Hyperion Hub of Heroism. In the Claptastic Voyage DLC several of them are pr