We used to keep our prisoners there. They got free about the same time my pod did.

​​[​​ She sighs quietly. ]

General Astra was desperate to prevent Krypton from happening again, so she tried to enslave the population of Earth.

​​[​​ She doesn't have any hatred either. Just grief. ]

The last remaining Kryptonians followed her. I don't know if there's any others, on Earth or elsewhere. Our sister world, Daxam, was wiped out too.