Dax was born in the first half of XX century and enlisted in military as soon as he was 18 years old. He didn’t have any noble goals behind it, it was just a way out of his nowhere life. He also wanted to have at least some sort of power over other Sims at his fingertips, and those fingertips turned out to be good at pulling the trigger. He became an exceptionally skilled sniper.
During one of the major armed conflicts Dax took part in a secret military experiment that consisted in turning soldiers into vampires. Not many of those test subjects survived, but those who did steadily climbed ranks both as officers and as vampires. Dax had been in every war and hotspot in the world over the past century.
Eventually the project was closed and the rest of the subjects were transferred under S.I.M.S jurisdiction where they were turned back into humans with a modified cure that left some of the powers and resistances intact. These agents are involved exclusively in operations dealing with other occults, which is quite rare, so they are left to themselves most of the time with little control or supervision.
Dax has never adapted to civilian life, or being human again really. All he knows is war and for the lack of it he's seeking to start his own crusades. Dax despises vampires as a result of being one for a few decades and snipes them down as a hobby. However he only hunts those that pose real threat to human Sims, i.e. feed on humans and kill them. If he was completely honest about it, Dax feels closer to vampires and would probably get along better with some of them than with humans.
Dax likes fighting but wouldn't start or force it without good reason, may fight dirty with an equal opponent though. It's safe to say he's not a violent man and doesn't want to harm innocent Sims, but neither does he want help them by all means. The man does feel good when helping others, but dismisses it as a weakness.
Dax is not his real name, it’s a nickname that formed on the fact that his real name as well as over a dozen codenames he had during his service all started with D.
The mission is critical with volition political
I could question it but I ain’t feeling too analytical