Edge of the Galaxy Incarcecon

The Edge of the Galaxy Incarcecon is a prison that first appeared in Ben 10: Secret of the Omnitrix. This branch has no guards or wardens, and the prisoners roam freely around the station. As there are no guards, there are also no rules, with "survival of the fittest" being the only law.

Secret of the Omnitrix
Tetrax, Ben, and Gwen visited the Incarcecon near the Edge of the Galaxy in Secret of the Omnitrix in order to find Myaxx, Azmuth's assistant who was placed in Incarcecon after she sold the cloaking technology used to hide Xenon to Spheroid pirates. Piscciss Volann and Tetramand prisoners, along with a Galvanic Mechamorph maintenance worker appeared. This branch was so far away that a wormhole gate was needed to reach it. Soon after approaching Incarcecon, its automated security systems were armed and ready to fire on Tetrax's ship. The only way they were able to approach it was by using a garbage ship clearance code. While getting away from Incarcecon, a Lepidopterran prisoner and many robotic drones chased after Tetrax, Ben and Gwen.

Omniverse
The prison had been evacuated when Ben, Rook, and the Plumbers were transporting Vilgax to Incarcecon.