Fort Rozz

Fort Rozz was Krypton's maximum-security prison. It was previously located within the Phantom Zone, but followed Kara Zor-El's pod, making its way to Earth, where it crashed.

History
Fort Rozz resided in the Phantom Zone. However, after Kara Zor-El's pod unknowingly entered the Zone, the prison followed along as it exited the Phantom Zone. As they reached Earth, Fort Rozz crashed in to a field, releasing its prisoners.

Former inmates

 * Vartox (deceased)
 * Alura Zor-El's sister