Not sure if this would help much, but you can try looking for it through here searching as Chill said, Blazblue or other possible options.
The site tells you what picture pack the gamer picture is from, so just describe the picture and you'll get gamer pictures similar to what you're looking for.
http://gamer-pics.com/
I could probably help more if there was a bit more of a description. I had shit loads of gamerpics on the 360.
As for whether or not a picture is available, I believe all of them are no matter what. Just use a GPI.