Demon Egg

The Demon Egg sits at the top of the documented egg ladder, above the Rare Egg and Epic Egg. Its brainrot cards are the only ones in the community source that explicitly credit an egg as their origin: Demonic Fox Spirit, Dragono Demonico and Demonicedon are all listed as "Found in the Demon egg."

That gives it a documented hatch pool of at least three brainrots, all sharing the demonic theme. Whether the pool contains more entries, the egg's price, and how to obtain it are not spelled out on the public sources.

Launch-day YouTube footage from RussoPlays (FhKNQZN9rLM) shows the Demon Egg being sold at the Rot Center Robux shop and hatched from the inventory bag, and adds a fourth possible pool member: a bat-themed brainrot called Della Morte, which arrives with the 'Mr. Beast' and 'Grow a Garden' abilities. Della Morte only appears in one public run so far, so it is tracked as YT-provisional pending a second source.