Natsu's Fire Dragon King Roar !! Wiped Out 973 people of Zeref's Army! on Make a GIF

Why are Natsu and Gajeel's ages unknown even though we do know Wendy, Sting and Rogue's ages? - Quora

The Duelists: Natsu Dragneel is Fired up! by Shadow-DJ on DeviantArt

Natsu Dragneel, Wiki

Zeref vs Natsu Mode Fire Dragon King on Make a GIF

Now I'm All Fired Up! REMATCH! Prelude! by Strunton on DeviantArt

Now I'm All Fired Up! REMATCH! Prelude! by Strunton on DeviantArt

Zeref vs Natsu Mode Fire Dragon King on Make a GIF

Now I'm All Fired Up! REMATCH! Prelude! by Strunton on DeviantArt

The Blog of a Random Fanboy — Fire Dragon's Roar

Now I'm All Fired Up! REMATCH! Prelude! by Strunton on DeviantArt

Natsu's Fire Dragon King Roar !! Wiped Out 973 people of Zeref's Army!