User blog comment:Miskos3/Fairy Tail Chapter 483: Seven Stars, Review/@comment-186.45.141.44-20160502213443/@comment-25111584-20160502220825

We do have this info on the wikia, y'know. Kinda the point of it being an encyclopaedia...

Anyway, Nick is right. However, Gray got his scar in his fight against Ultear.