Game of Thrones actor Hannah Waddingham has been cast as the Kryptonian criminal Jax-Ur in SyFy's Krypton, according to Deadline.
The character of Jax-Ur, previously portrayed as male, is an evil Kryptonian scientist who was imprisoned in the Phantom Zone after killing thousands with an experimental weapon. Jax-Ur has occasionally teamed up with General Zod as one of the criminals banished alongside Zod in the Phantom Zone.
In Krypton, Jax-Ur is reportedly a former scientist who now leads the terrorist organization Black Zero - a name that has also been associated with Zod in other media.