Moira

Moira is a goddess who supposedly exists of series Maou-sama, Retry!

Abilities
It has been said that she is the goddess of destiny controlling the destiny of all living things changing for better or worse depending on her mood.

Trivia

 * From the demon lord's point of view, if there is such a goddess she always stays on the winning side just announcing her position after the plot has been completed.
 * The name Moira is a reference to Moirai, an incarnation of fate in Greek religion.