Sorry for big size but its already 30% of original image ^^
Its Igriel (white Ox who is actually a black hole in ox skin) and Luush (black Equinewho is actually a super nova in equine form), they are some sort of angels or ancient beasts created for hard work - they make planets, stars, moons etc. Big serpent thing is infinity.
Tools: Photoshop CS4, cintiq 12, and looots of time
Please, Please view this image in full size ^^