Julian met Bellona before he went to Iraq, which resulted in Hylla's birth. While he was there, he was embedded with shrapnel from a roadside bomb. When he got back he met the war goddess again, the two had Reyna. Over the years he started to become paranoid. He would lock his daughters in their rooms at night to protect them from enemies. Overtime he became more and more convinced he was under constant danger and eventually thought his daughters were trying to harm him. He eventually became a mania, a spirit of madness, and attacked Hylla, knocking her out. Reyna took a sword and killed what was left of him. The two fled San Juan, Puerto Rico soon after.
Reyna tells Nico the story of her father while they camp out near Buford, South Carolina.
When Hylla was born, he was caring. After he returned from Iraq, he suffered from post traumatic stress disorder. He would lock his daughters in their rooms at night to protect them before thinking they were the enemy.