Leon Randolph Stiles was an orphan. He always ran away from his foster homes.
That was until he turned to crime and became of serial killer inn the 1950s.
The women Styles killed where prostitutes, except for one. Styles accidentally shot Sherif Hoit's daughter when she got in the way. The local media described Leon has a drifter and extremely dangerous.
In episode Killin' Time, Sam leaped into him, catapulting Leon into the Waiting Room. However, he escaped it during the leap. He was gotten back into the room and he leaped back into himself after Sam had done his mission.