Claude Errera is the founder and webmaster of halo.bungie.org, a popular Halo fansite. Errera goes by the user name Louis Wu. The name "Louis Wu" is originally a character from the book Ringworld, a major inspiration source of Bungie.
His devotion to Bungie and Halo earned him a "Special Thanks" credit at the end of Halo: Combat Evolved, as well as a character, Corporal C. Errera, named after him. He was interviewed in the Halo 2: Collectors Edition DVD, where he discusses the Halo multiplayer matches he holds with his friends. He was also given Recon armor by Bungie before it became publicly available through the Vidmaster Challenges.
In Halo: Reach, Club Errera, a nightclub in New Alexandria, is named in reference to Claude. Also, the Tribute Room in the level The Package contains a terminal dedicated to him and HBO. One of the human troopers in the game is also named C. Errera.