Charlie's RV is a Brown and Tan luxury Recreational Vehicle-turned-Mobile command center owned by Charlie Kiel, and later given to Gabe Landis. It is very large and features a living room, bedroom, kitchen, and bathroom. It us used as a mobile headquarters by Gabe and his allies.
In Nightfall: Hellhound Charlie is seen turning it into a mobile command center for his police headquarters. He uses it several times as he hunts Raymond Spooner. In Nightfall: Hell on Earth, it is seen two times throughout the story, more prominently at the end, after Charlie's death when he gives it to Gabe to use in his crime fighting. It plays a much larger role in Nightfall 2: Winterlong where it is again used to track down and defeat Raymond Spooner.