User blog comment:Miskos3/Fairy Tail Episode 170: A Small Fist, Review/@comment-4829046-20130223171633/@comment-5840892-20130223201227

well looking at that picture of "spiky hair", it occoured to me, it looks somewhat similar to Lucys's hair from behind when she's running or wind is blowing, so maybe; Mashima-sensei drew that character to confuse or make us wonder before revealing that person. He could have just decided to put a hooded cloak on that person (and requested the animators to do so aswell). He could have also changed his mind halfway through.