Colin Matthew Hall was born on March 29th, 2010 to a pure-blood wizarding family led by Matthew and Lillian Hall. Colin has one younger sister, both the Hall siblings grew up with significant means. Growing up was extraordinarily easy, on the outside, for Colin. He made friends easily, and he excelled with top marks in school. His parents were often confused why he got passed over for Prefect, because they felt that he should've been given the honor. It never bothered Colin too much, as he preferred staying out of the limelight where possible. Colin grew up knowing that his parents looked forward to him carrying on the Hall name... but Colin also had figured out by the time he was fifteen that he was gay. He came out to them the summer before his seventh year, to general acceptance, but to some clear disappointment. It hurt Colin that his parents didn't seem to grasp that he could get married, but he's maintained a friendly relationship with them, if only because they didn't want to lose their social standing.
When Colin graduated from Hogwarts, he entered the workforce. He took a job as a bartender while he figured out which department he wanted to apply for at the Ministry. While there, Colin found himself calling Aurors to take care of bar fights, or take care of overly drunken customers. As a result, he found himself befriending a few of them, who encouraged him to apply to the force. Colin had the grades to do it, he knew that much, but often wondered if he was really cut out for the life of an Auror. Still, he figured it never hurt to apply, and so when he was twenty, he did so. He wasn't immediately accepted, and so he took a job working in the Holding Cells, instead, processing parchmentwork. After doing that for two years, observing the Aurors, he went out for it again. The Head Auror decided to take a chance on him.
Six years later, Colin still works for the Aurors. It's helped repair his relationship with his parents, who seemed to have fully expected him to pick a more... effeminate career. They're fully supportive of having their son work for law enforcement. It's been a difficult path at times, though. Colin's lost an Auror partner, rescued people of all races and upbringings from horrible situations. He's also seen a few people wrongly accused of things, and some injustices on that front as well. After six years, Colin's considering trying to move up the ranks, probably in the department itself, but maybe even within the Ministry. He likes bringing justice to those who deserve it, and protecting people who need protection. And while he knows he can make a difference where he's at now, he wonders if a higher position would enable him to do more in that respect.