User blog comment:Imouto-tan/Mei-li/@comment-4867780-20160330120020/@comment-26362471-20160330121011

All of the (female) Celestials have humanoid forms excluding the Moth King; Mei-li isn't a female but she does identify as one, on top of that she can only take that form.

Her prices? :P

She has made many of the weapons used by the Wizard Saints and other powerful characters in verse.

She is based on Shoggoth, a Great Old One, that is basically living black ooze.