User blog comment:Stone Roger/Natsu and Zeref have somekind of relation?/@comment-1359322-20130610122235/@comment-109.150.118.196-20130706045218

http://images1.wikia.nocookie.net/__cb20121108102312/fairytail/images/d/df/Great_Demon-Lord_Dragneel_Anime.jpg they look similar http://images4.wikia.nocookie.net/__cb20121020043216/fairytail/images/6/63/Dragonslayer_Acnologia.jpg