Headstrong, bitter and occasionally sullen due to the situation he's been put in. Prone to showing the occasional flash of appreciation towards what are now considered his 'kindred' despite his previous blind hatred towards their kind. His assimilation into their culture has only just begun by immortal standards and it is quite apparent.
Clothing that typically consists of semi-formal garb, including slacks, and any variety of button down shirt.
A shillelagh that's likely older than himself.
When allowed, he feels most comfortable with a side arm, preferably a SIG-Sauer P226.
Brennan was a capable combatant while he was still mortal, his turning only served to increase said prowess. He lacks many of the disciplines of his elders, but years of functioning as a being who hunted creatures that could tear out his throat if they got the drop on him molded him into quite the survivalist.
An exceptional melee combatant, he uses technical prowess and sheer fervor in lieu of the speed and brute strength that several other supernatural beings possess. That being said, he's hardly a slouch in either of those departments.
Brennan's experience with ranged weapons is varied but as a result inconsistent. He is most comfortable with a pistol or a semi-automatic rifle.
A former slayer of kindred and their folk, Brennan drew the attention of the Vankoryth Detente, an organization he had no previous conflict with. Seeing him as a potential threat, the Detente took early initiative and captured him. Despite his vehement disdain towards the kine, several higher ups saw Brennan as a potential asset and thusly gave him the option of being turned or executed as an example to any hunters targeting the group. In a moment of weakness, the man chose the former, convincing himself that he would massacre his soon to be siblings as soon as the opportunity arrived.
However, once he had an inside view, a begrudging respect was formed. The Detente were certainly no worse than the various missionaries/churches/zealots he offered his services to, they managed to maintain some sort of brotherhood as tenuous as it may have been. Instead of following through with his initial plan, he simply fled as soon as he could.
No contact was made with him after his 'escape' but after several years rumors of his death began to surface in both hunter and kine circles alike.