The creator and ruler of the universe, Solaris is a super powerful energy being originating from the beginning of all things. Fond of all things light he created his realm to be a brightness in the dark of space.
Solaris's sister, Lunera is taking up residence in his realm due to her own being destroyed by their father, the all father.
Solaris's father, the all father is the creator of all things. Currently he is set on destroying Solaris's universe in order to restore the "purity" of space.