Sometime after the Great Cataclysm, he appeared in Iraq. Leaving a path of ashes and being viewed by people as a walking disaster, the boy was nicknamed "Dragon". With nothing to live for and no goals of his own, Dragon spent years wondering the lands and destroying whatever he choose in an attempts to alleviate his boredom and misery. As an adult, he encountered Faerie and the boy promised that in 200 years they would be able to lay waste to the entire world. Finally with a goal to pursue, Dragon follows the child he sees as an insect although his despair remains.

(Source: Fire Force Wiki)