Moved to Photoshop forum.
If you mean the technique used on the figure (as opposed to the type, the fire or the background, which are all done with separate techniques), it's not the result of just applying a filter/plugin - none that I know of, anyhow.
I suspect it's a combination of some or all of the following:
- High Dynamic Range Imaging
- Surface Blur
- Duotoning
- Manual retouching
Having said that, this tut might get you part-way there (providing you have right kind of starting image):
Render Effect Photoshop tutorial - Photoshop Tutorials - Website Templates
However, there is the possibility, as you suggested, that the figure was actually created in a 3D application like Poser.