Mega Neons are a special version of pets in Adopt Me! that was released on April 17, 2020. Players get a Mega Neon pet by combining four Luminous Neon Pets of the same type of pet in the Neon Chamber under the main bridge. When combining these four Neon Pets, players receive a radiant color-changing pet usually going through the colors of the rainbow. The parts of the pet that are glowing depend on the type of pet the player is turning Mega Neon. The only pets that cannot be made into a Mega Neon or Neon pets are the Chick, Scoob, and the Pet Rock, which are all from events and are untradeable. There was a Twitter post in which one of the Adopt Me! team members was sitting on a Neon Pet Rock, but that is unobtainable unless you hack the game. The Scoob and Pet Rock also disappeared after their respective events ended.
- The Chick could be hatched out of the 2020 Easter Egg during the ROBLOX Annual 2020 Easter Egg Hunt and can not be traded or gifted, which is why players can not make a Neon or Mega Neon Chick.
- Same with the Pet Rock, it was a flyable and rideable pet that was available at the beginning of April 2020, as a fun April Fools' event. It was then taken out of players' inventories on April 3, 2020. Each user could only have one of these and was also untradeable and unable to be gifted to other players.
- Previously, the Shadow Dragon glowed a turquoise color instead of the usual rainbow glow. However, Adopt Me! changed it to glow rainbow in the Monkey Fairground Update.
- Adopt Me! YouTubers who are part of the Adopt Me! Influencer Program automatically have their Neon pets Luminous.