Aperture Science Cooperative Testing Robot HADES Picture

I figured if ATLAS and P-body are based on a core and a turret respectively, the only thing left was a rocket turret.
I named him HADES to continue the subtle greek mythology themes in Portal 2, and since he's a rocket turret, he's also a death bringer (or was until he became a testing bot)
Atlas III
The Titan Atlas
Aperture Science Cooperative Testing Robot HADES
Olivia Alice Calypso
The Day Atlas Fell