The short answer is that previously the Ghouls were named by the element symbol they displayed on their costumes – Earth (Drums) Air (Keyboards) Fire (Lead Guitar) Water (Bass) and Aether/Quintessence (Rhythm Guitar) like this –
They are just called Ghoul/Ghoulette now as well as having fan nicknames for them – Dewdrop, Multi-Ghoul etc etc
I still tag them by the elements because 1, I’m stuck in a bad habit of referring to them that way still and 2, I LOVED that they used the elements and hate leaving that little piece of the old era behind.
Thanks for following and have fun getting to know Ghost. ♥