The Infinetentiary is a satellite prison in the far future for people who have broken the laws of time. It is surveyed and guarded by the Time Paradox Avoidance Enforcement Squadron.
The prison is shaped like the infinity symbol. Its sides are rimmed with a glowing silvery blue. Next to it is a large sign reading "INFINETENTIARY" and two red beacons, composed of impossible triangles. It's located near a moon or planet that appears to be crumbling.
During a lock-down, a siren is sounded, the red beacons turn on, and the several lights on the edges of the sign shoot red light outwards.
- 208. "Blendin's Game"
- Its name is a portmanteau of the words "infinity" and "penitentiary."