This is a small selection of the screenshots, official art, and fan-created images from the original (and still the best) Final Fantasy VII.
Final Fantasy VII
The official concept sketches. Now in three different versions! Because we're that damn repetitive.
Doujinshi, or doujin, are fan-drawn, unofficial comics published and circulated in small numbers. There are quite a few Final Fantasy doujinshi circles around, covering the games from IV to XII. These are some scans with Reno in them.