"Pilot" is the first episode of Krypton. It aired on March 21, 2018.
Two hundred before the birth of Kal-El, a new religious power rises on the planet Krypton. Val-El, of the House of El, is charged with treason and sentenced to death. As a result, the entire House of El is stripped of their status, and they join the Rankless.
Fourteen years later, Val-El's grandson, Seg-El scams Guildsmen for money to help support his family. While trying to deliver medicine to his father at the Lawmakers Guild, Seg stops a terrorist attack targeting Daron-Vex, the same man who sentenced his grandfather to death. As a result, Seg is granted the right be re-ranked in Kandorian society and to marry Daron-Vex's daughter, Nyssa-Vex.
On the streets of Kandor, Seg meets a stranger called Adam Strange who tells me that a threat from the future is approaching Krypton, and that he needs to find the Fortress. He also gives Seg the Sunstone which is marked with a modified symbol from the House of El.
Seg is almost arrested for breaking curfew, but is rescued by his mother who takes him to the Fortress, which was Val-El's hidden laboratory. Val-El was convinced that something was coming to destroy Krypton and the Council tried to suppress his findings. Returning to the city, his mother is arrested for stealing a skimmer and claims allegiance to the terrorist group Black Zero. At her trial, Charys-El denies the existence of the Fortress. During the proceedings, both Charys-El and Ter-El are killed by Primus Jayna-Zod.
At the Fortress, Adam Strange once more visits Seg-El, telling him that his future grandson is in danger. A being called Brainiac is wiping out planets and is trying to stop the birth of Kal-El, the universe's greatest hero, in the future.
- Cameron Cuffe as Seg-El
- Georgina Campbell as Lyta-Zod
- Shaun Sipos as Adam Strange
- Elliot Cowan as Daron-Vex
- Ann Ogbomo as Jayna-Zod
- Aaron Pierre as Dev-Em
- Rasmus Hardiker as Kem
- Wallis Day as Nyssa-Vex
- Blake Ritson as Brainiac/Voice of Rao
- Ian McElhinney as Val-El
- Nicholas Witham-Mueller as Young Seg
- Anthony Kaye as Soldier #4
- Phill Langhorne as Lawmaker
- Danijel Korsa as Prisoner #3
- Josh Bradshaw as Cadet #1
- Adam Fielding as Cadet #3
- Hadrian Howard as Technician #1
- Peter Basham as Technician #2
Production began on September 25, 2017.