The Demoman was born under the name Tavish Finnegan DeGroot in Ullapool, Scotland. His parents were Tilly DeGroot and her unnamed husband, whom both are blind. Following an unnecessary Scottish tradition amongst all highland demolition men, they abandoned the Demoman at birth until his skills in explosives could manifest. At an unknown point in time, he was eventually adopted. Unfortunately, he ended up losing his adoptive parents due to his fierce tempter and fascination with explosives, along with his plan to kill Nessie, the legendary Loch Ness monster. Because he is now an orphan, he was forced to move to the Crypt Grammar School for Orphans, where he unhappily lived for the rest of his childhood. However, during his time at Crypt Grammar, his skills in bomb-making drastically improved and soon enough, word of this spread far and wide. Eventually, the Demoman's birth parents arrived at the school where they revealed to their son the cruel tradition among the Scottish demolition men. The Demoman's childhood life had ended and a new beginning for him has begun. Sometime after being reclaimed by his parents, the Demoman was sent out by his mother to find a job on Halloween, where she states that he could find one from the ghosts that appear then. Wandering about, the young Demoman stumbles across a castle where he's greeted by the wizard Merasmus. While suspicious of the young boy, he quickly decides to hire him to sweep the castle's floors for a nickel, but warns him not to gaze in a particular cursed tomb. As the witching hour approaches, the Demoman notices said cursed book: the Bombinomicon, who tempts him with information about bombs. Curious about the book's content, the Demoman opens it only for the spirit within to possess the eye he peeked inside with. Merasmus is horrified by this development and, casting a spell, magic himself, the castle and Demoman's cursed eye away. With that, the Demoman never saw his missing eye again, but it's said that every Halloween, it could be seen haunting the nearby moors with Merasmus. Sometime later, Demoman goes to the US to work as a mercenary to work for either RED or BLU, with his mother following him as well.