- "Krypton's not just a place, it's a spirit. It's hope. It's sacrifice. It's what our parents did for us. What you did for Jonathan. We have made our parents proud by fighting for what's right. So, we have to keep fighting. And as long as that spirit is alive, Krypton will never die."
- —Kara Zor-El to Kal-El[src]
The planet was separated into guilds, two known ones being the science and military. Krypton was governed by the Ruling Council, but its exact composition and functioning are unknown.
Apparently, birds didn't exist on Krypton.
Krypton's scientists designed probes powered by BetaHedrons, which contained information on the planet's culture, religion, technology, etc. These probes were sent out into space as a means of communication and so others could learn about Kryptonians' civilization.
Kryptonian life began on Urrika, the planet's first continent. Urrika was inhabited by the Juru, a matriarchal tribal people with a polytheistic religion. Among their worshipped entities was Yuda Kal, a goddess of life and birth. Over time, the people's religion became monotheistic, with the sun god Rao becoming the only God. With the worship of Rao, modern Krypton was born.
Over time, the Juru's way of life became condemned due to its usage of dark magic. Eventually, the Ruling Council of Krypton ordered any evidence of the Juru, including their language and so-called "superstitions", to be destroyed and erased from their history.
War with Daxam
Krypton is known to have feuded with its sister planet, Daxam, over their various differences, such as Democracy vs. Monarchy and how life should be lived. Both Krypton and Daxam went to war over their respective ideals, with casualties in the thousands.
In 1979, the planet was known to be unstable, and would soon be destroyed. Amidst the chaos caused by the impending death of the world, members of the House of El chose to save who they could by sending them away from the planet. The infant Kal-El and his cousin, Kara Zor-El, were sent to Earth, with Kara instructed by her parents, Alura and Zor-El, to look after Kal-El. Shortly following their departure, the planet finally destabilized and exploded, destroying it utterly. The destruction of the planet released a shockwave that knocked Kara's pod off course and also sent radioactive pieces of the mineral Kryptonite flying into space, some of which found its way to Earth.
It is later discovered that Argo City survived the planet's destruction thanks to the efforts of Zor-El. However, on December 10, 2019, it was destroyed in an Antimatter wave, killing all, leaving Kal-El and his wife, Lois Lane, and their son, Jonathan, as the only survivors who later on evacuated to Earth-1 after that same wave destroyed Earth and the rest of Earth-38. Argo was restored when the multiverse was recreated.
- Alura Zor-El
- Kara Zor-El
- The Commander
- Samantha Arias
- Thara Ak-Var
- Lara Van-El
- Kara Zor-El's grandmother
- Julia Freeman
- Grace Parker
- Thara Ak-Var's father
- Thara Ak-Var's mother
- Thara Ak-Var's brother
Adventures of Supergirl
- Harry Wells implied that just as there are 53 (known) different versions of Earth, there exists multiple versions of Krypton in the multiverse, not just in Earth-38 and Earth-X.
Behind the scenes
- Krypton was first featured in Action Comics #1 (June, 1938) and was created by Jerry Siegel and Joe Shuster.
- In 2018, both January and March statements were released regarding the TV series Krypton, stating that it was not part of the Arrowverse and thus would not crossover with the DC shows of The CW.