Can’t find the sigil of Nebiros anywheres- google come up with a Neberious but not sure if that’s the same entity
here you go
Trust me on this. This is his sigil
I was able to find that. So it is another spelling/version of his name and is the goetic being. So many different spirits very similar names but are different entities. Have you ever worked with him? Not trying to be nosey. I’ll share my intents- to educate me in these arts as that seems to be part of his attributes and to help me and ask him to compel his subordinates to work with me as well.
Ive worked with all 72 goetic demons and more