When speaking of neon, everybody thinks of neonlight. But most of the „neon tubes“ contain mercury vapor. Neon glows red.
The name simply means „new“. So Neo the monster likes everything new and cool. He doesn’t like to get his hands dirty and prefers others to do the work.
Krypton is a very rare noble gas. It can be found in lamps, flashes and lazers.
Krypto the monster likes to keep hidden and spy on other monsters. Is he just a crazy stalker or does he have a secret mission?
Like the other noble gases he doesn’t have arms, instead he can move things by pure mindpower.