Yes, I am a big fan of Final Fantasy and the characters/artwork created by the brilliant Yoshitaka Amano. If you are a fan of the series, you are probably familiar with his artistic paintings already. These images will work perfectly on Lockscreen with Random Lockscreen.
Images optimized for iPhone 4 screen resolution (640×960 px)
All images are the work of 天野喜孝 (Amano Yoshitaka)