Born to two hyper aggressive draconic Scrafty hybrids, Clyde got the short end of the stick being the first born, having to endure his parents' endless physical altercations and being witness to his father murdering his mother in front of him; going for the eggs of his younger sisters next, Clyde's father was the first kill under his belt. Afterwards he spent the next decade or so of his life mugging, murdering and dragging whatever he could home to his sisters so they could all survive, protecting them all with his very life as if they were his own daughters rather than his younger siblings.
A brutal killer with a ravenous appetite, he was never able to be aprehended by the Castelia police department despite them very well knowing his name and face, he made it a point to disrespect and insult them at every given chance. He eventually found himself face to face with the mafia don Lucciano of the Black Family; with his hands tied by an armor clad Greninja and Sinatra talking down to him for getting caught after taking out one of their associates. Lucciano was moments from executing him on the spot before his young daughter Bonnie stopped him, finding great potential in his abilities and the fire in his eyes. He'd be right there by her side from then on, as her loyal bodyguard and right hand man.
He now is mostly hands off unless absolutely necessary, and recruits their new hitmen, testing them himself to know if they'll be worth the paycheck and trust or if they'd be another body bag he'd be throwing into the back alley, actually befriending a few of his best men and gaining a few of his own connections outside of Unova, following his wife's ambition to expand their grasp of the region through other methods than just fear and murder.