A couple things:
The βVeesβ doesnβt mean ALL the overlords, itβs just the little group formed by Vox, Velvette and Valentino.
The reason Katie Killjoy is voiced by Brandon Rogers (BlitzΓΈβs VA) is because Katieβs character was inspired by another character created by Brandon called Bryce Tankthrust (itβs pretty much the actor dressed as a woman and itβs hilarious π)
In case you didnβt notice, Charlie and Vaggie are actually dating.
I understand you might not know the entire lore that was provided to us these past few years before the show premiered (not even myself know every single thing) so this is just some basic info that could help you understand the show a bit better.