Question: is natsu a god slayer?
Answer: Etherious Natsu Dragneel. ... After Igneel defeated E.N.D and his soul/power was separated from Natsu he was given to Igneel to raise by Zeref as part of the 400 Year Plan. So while his body is that of a demons he is classified as a Dragon Slayer due to his identifiable magic taught to him by Igneel.