Can Natsu willingly use DragonForce ?

Food and Money, In the Shadows (Natsu X Reader)

Natsu vs. Luffy VS Battles Wiki Forum

Will Natsu become a dragon because of Ingeel leaving his body or will he become who he really is (the strongest demon created by Zeref, Etherious)? - Quora

Fantasy - Sting and Rogue vs Natsu Dragneel

Gajeel redfox, Wiki

Gajeel redfox, Wiki

Next Tier Power-Up - TV Tropes

Natsu and Gajeel own Sabertooth! – Dragon Force Activated! – Fairy Tail 294

Pokemon Natsu Dragon Force 16

Fairy Tail Hundred Year Quest Discussion Thread 6, Page 3

Fairy Tail Sign Ups