User blog comment:ChocolateSquirrel/Ice Trail Chapter 3 Review/@comment-24257713-20140918085539/@comment-24257713-20140918103149

Another classic thing Mashima did was re-use character models. Satsuki clearly looks like Lucy, with Natsu's appetite, Gray's absentmindedness, and Erza's sword skills. The weird bird thing is supposed to be Happy.