Leon Scamander had had a rough life. Now he was reduced to being a lowly thief, having no other options due to the less-than-great economy and lack of proper jobs.
He had been fleeing some of the royal officers when he noticed somebody else seeming to have trouble. He was quick to help them slip out of sight, bringing them to his home of sorts (which was really just an out-of-the-way spot, not a house).
Little did he know he had just helped royalty run away.