Explanation in the comments (Frost if you copy them I swear)

These three keep people from entering/exiting the realms

Pyro-Meme realm

Cryo- Light realm

Thunder- Dark Realm

I see

I only have two people guarding realms.

One being HellBunny (guess it) and one being Halogon (guarding the random shape world were souls get turned into shape demons.)

*where

Thunder: I hate my job