This article is about the ancient race. For the character from All-Star Superman, see Krull.

The Krull were an ancient and highly advanced alien race, more advanced even than the Kryptonians. They died out many millenia ago, due to some unknown catastrophe. One of their advanced starships was left on Krypton, and was discovered by Jor-El I, and later unearthed by his son, Jor-El. Though its advanced technology might have saved Krypton from its destruction, the ship was destroyed by Jax-Ur's missile. ("World of Krypton")