Dunno, I can't see the Image
But Anyway, they arent 100%PDN, because the renders are C4D, I tried for a long time to get things that looked like that, and failed miserably, but all of the background and a lot of the effects on the renders are my own. I get a render with a transparent background and muck around. On 'the Ring' one, I made a circle, used the flames method and shape 3D a lot, the pupil was a 3D'd circle, and the fire was flame method with zoom blur, bulge and overlays (about 25 layers in total)...
Milky