Unnamed Planet

"It's on the very edge of colonized space, and after the war between the humans and the aliens, it was more or less forgotten by Earth and the UNSC."

- Felix in FAQ

This unnamed planet is the main setting for the first ten seasons of Red vs. Blue as it is where many locations, such as Blood Gulch and Valhalla, reside.

Overview
This planet, though unnamed, is where the first ten seasons of the series takes place.

Trivia

 * It is unknown if locations the characters were teleported to during Season 3, such as Battle Creek, are on this planet.
 * It is also unknown if this planet houses any of the locations seen during the backstory segments of Seasons 9 and 10.
 * This planet is represented by several maps in Halo: Combat Evolved, Halo 2, and Halo 3.