Roger Canning grew up in a not-so-good neighborhood of Boston. His parents were pretty abusive, as any parent would be to a glutton. His father was an alcoholic and his mother was addicted to cigarettes and marijuana. In school, he did as best he could, but with all the bullying because of his weight (he says he's big-boned), and his parents constantly abusing him, he eventually just started to be more evil in general.
During high school, freshman year, he had his first cigarette. He was hooked almost immediately and would almost always be caught smoking, and despite his addiction, still performed decently enough in school to go to college. He moved out during high school and got a full time job, and worked hard, but he didn't treat others very well at all, almost always going for what worked for him best. During college, he went for a business degree, and took an interest in acting and Hollywood and its history. Once he graduated with his bachelors, he saved up enough money to get a flight to Hollywood and start up his career as an agent for movie actors, taking an interest in foreign movies in particular.
Eventually, one path lead to another and he met Solomon Lucky, what he thought was his quick way to fame and money (and more cigarettes). He was on the plane with Solomon, having taken a similar abusive relationship to him as his parents had to himself, and once the apocalypse happened, he made it his goal to find Solomon and make it big again.