Well, That's simple really... I made this a couple of years ago and back then, I just didn't have that many official art. I just couldn't find it anywhere, untill I discovered The MegaMan Network. They almost have everything and without a stupid mark as the site RPG fan (Where I've back then downloaded most of them) has.
If I had known about TMMN back then, it would have looked different. But I'm considering doing this one again but better...
One more thing: but ShadeMan, LaserMan and BurnerMan, you don't think they are cool???
Well actually it's AquaSoul and JunkSoul from MMBN4 BM. And that Chaos TomahawkSoul was a mistake I wanted the original TomahawkSoul, But when I made this wallpaper I had very few official art pics, so... Now thanks to the Megaman Network I have lots of Megaman art pics. ^_^