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“Game of Thrones” alum Hannah Waddingham has been cast in Syfy’s “Krypton” in a gender-flipped role.

The actress, who memorably played the bell-ringing, shame-slinging Septa Unella in the HBO series, will recur on the Superman prequel series as a female version of the comic book character Jax-Ur.

Jax-Ur was previously one of Krypton’s greatest scientists with deep ties to the planet’s past, but when the events of “Krypton” pick up, the character is determined to bring radical change as leader of the underground terrorist organization, Black Zero. In the comics, the character has traditionally been male.

Also Read: 'Krypton' Faces Invader From the Future in New Trailer for Syfy Series (Video)

Led by newcomer Cameron Cuffe, “Krypton” takes place years before the original Superman story, when the House of El was shamed and ostracized. The series follows the Man of Steel’s grandfather as he fights to redeem his family’s honor and save his beloved world from chaos.

Georgina Campbell, Shaun Sipos, Elliot Cowan, Ann Ogbomo, Rasmus Hardiker, Wallis Day, Aaron Pierre, Blake Ritson and Ian McElhinney also star in the Phantom Four and Warner Horizon Television series. David S. Goyer and Cameron Welsh executive produce.

“Krypton” premieres March 21 on Syfy.

All 8 of 2017's Superhero Movies Ranked From Worst to Best (Photos)

While 2017 saw some groundbreaking superhero movies that elevated the genre, there were also some bombs that left fans disappointed. Here the year's releases ranked from worst to best.
8. Justice League Hands down, the worst superhero movie of 2017 is DC Comics Superhero team up movie, as TheWrap exclusively reported had a lot of enemies: a looming corporate merger, a family tragedy, an internal clash between light and dark themes. But its greatest enemy was time -- as in the amount allotted to make it.
Warner Bros.
7. Power Rangers Lionsgate and Saban Films released this hot mess of a film based on the popular kid's TV show’s first season back in 1993. There’s plenty about “Power Rangers” that could have been improved, from the selection of the film’s least interesting (yet whitest) character as team leader to the clunky world-building that happens in any movie that’s thirsty for sequels.
Lionsgate
6. Kingsman: The Golden Circle Without the first movie’s snappy charm, Matthew Vaughn’s follow-up to the gentleman-spy saga is just pop idiocy.
21st Century Fox
5. Guardians of the Galaxy Vol. 2 Chris Pratt and company keep the banter and breeziness coming, but this sequel comes off more as fun filler than a movie unto itself.
Marvel Studios
4. Spider-Man: Homecoming The web crawler finally headlines his own MCU film. Tom Holland and Michael Keaton are standouts in this funnier, more teen-oriented take on the trials of Peter Parker.
Sony Pictures
3. Thor: Ragnarok Taika Watiti delivered the best entry in the "Thor" series which managed to be entertaining and also the funniest. There’s little pomp and even less circumstance, but its goofy pleasures are more than enough.
Marvel Studios
2. Wonder Woman 2017 will go down as the year the female-led and directed superhero movie made a statement heard around the world and at the box office to the tune of over $400 million domestic.
Warner Bros.
1. Logan The first Superhero movie of 2017 turned out to be the best one. Whether or not the “Wolverine” movies have a future — Jackman swears this is his last go-round — “Logan” is an exceedingly entertaining one.
21 Century Fox

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From “Justice League” to “Logan,” this year was a mixed bag for movies with characters that originated in comic books

While 2017 saw some groundbreaking superhero movies that elevated the genre, there were also some bombs that left fans disappointed. Here the year's releases ranked from worst to best.

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