User blog comment:FairyRaven/Fairy Tail Chapter 324: The One Who Closes The Door, Review and Commentary/@comment-112.205.41.120-20130323032321/@comment-84.113.52.218-20130323095036

I'm not so sure you can call those things Hades created demons. They disappeared the moment Hades lost the demon heart, so they don't have life of their own. Furthermore to me they seemed to be an extension of Hades rather than under their own conciousness and only following his orders.

Deliora and Lullaby on the other hand seemed to be acting completely on it's own volition and have their own lifeforce. Even the guildmasters called it "living magic".