Moondream is Odera's astral form.
This is a representation of the resolve of the highly eccentric, yet righteous entity - Odera. Odera isn't very respected by the beings of the astral realm. It is likely due to rumors of him originating from Physical outer space. Despite how resented he may be, Odera still upholds his duties in the astral realm, and he will not let the others' thoughts of him change who he really is.