Probably been done but:
Arachnia, Spider Queen.
Arachnia's Lair, Duskwood.
An evil beast reigned in by a brave hero, she obeys your every command... for now.
Large 8 legged hairy creature. Crown shaped head to indicate Queen like status. Similar to nerubians, but a lot darker and fiendish.
Will weave a web into a cocoon like shape, as though it was... practising. Rubs its mandibles and legs together.