[cabman11]

Originally Posted by Breimn

Looks like i was wrong, Deena is

Spoiler for raw:

the avatar of the goddess so the first theory everyone had(which was trashed when Goddess appeared) was correct. She was also the one who helped seal Rufasu the first time.

10 Buck's she is the super secret 13th star that was mentioned during the fight with Vento.
At which point she would be a quadruple agent