User blog comment:FairyRaven/Fairy Tail Chapter 333: Man and Man, Dragon and Dragon, Man and Dragon, Review and Commentary/@comment-203.87.139.100-20130531130047/@comment-4829046-20130531130614

I don't think that's possible. Then again it would answer some questions about takeover(that is canon). Also since unlike Elfman, Mira's takeovers always sports her own image donning the demonic aspect, its highly possible that the actual demons are different and may not be female either.