Louis

Pills Here!
Before the Infection, Louis was working as the Junior Systems Analyst at Franklin Brothers in Raccoon City. During his lunch breaks, he would often visit the shooting range which his co-workers would mock him for doing so. It can also be assumed he also played video games as he has a figurine of the Heavy from Team Fortress 2 on his desk and mentions Counter-Strike when picking up a gun, and makes various references to Half-Life as well as grieving over the lack of an Xbox on the island on the Keys. Two days after the Infection began, he encountered his first Infected in the men's restroom after trying to convince a co-worker that the press was overreacting and everything was still safe. After killing the Infected, he exited the restroom only to find his office in shambles, his co-workers all dead, and the outside world falling to pieces. Louis is the most well educated of all the Survivors, holding at least one undergraduate degree and an MBA and at some point learning Japanese during an internship in Tokyo, Japan

Season 3
Running out of money from pills, Louis decided to join TFR to make quick buck and buy more pills.

Episode 10
Seeing his little luck in wrestling, he tried to find other ways to acquire PILLZ...

Episode 10
However, he returned to the ring completely high on pillz one last time before the end, and stole the chances to live of 3 other wrestlers. Yet, he didn't even care what he just did and just made a thumbsup at the camera. He probably wasn't even aware of what was happening. GRABBIN' PILLZ.

Episode 11
Full of pillz, Louis hit straight with a human wall.