Grazzt said:
But- what you cannot do is make your Demogorgon a two-headed baboon demon with tentacles. Same for Tiamat, Bahamut, Orcus, etc. While the names are all derived from mythology or legend, the configurations are not. And without permission from WotC, you can't use them.
So, I'm assuming Necromancer Games got permission to use the image of Orcus for its company logo?
Anyhow, you can still refer to these characters in your products without permission, right?