>>106609406He works for Meteora, as she won that right through conquer and followed her when Eclipsa left for the temple. Not to mention he starts his lessons with her in following episodes.
I think he plans for two kingdoms to function by the end of the show: The mewman one with Star and the monster one with Meteora.
Mewmans have proven to be unable to coexist with anything remotely different to them as they are a bunch of morons and thieves (if felt good when the giant monster got his home back, I've suffered from "okupas" before and the police do nothing about them).
Better to have them separated.
Also, Spiderbite Slime King confirmed!