Equellus is a low-tech planet in the Hatari sector of the Cyrannus galaxy, similar in motif to the American West circa 1800s. Apollo crash-lands on this planet after luring a Cylon task force away from the Fleet with false distress signals.
Prior to Apollo's landing on this planet, there was another battle with the Cylons approximately ten yahrens prior, resulting in another Colonial Warrior, Martin, crash-landing on Equellus. A Cylon Raider also crashed roughly nine yahrens prior, Equellus residents Lacerta, Marco, and Macy rescue a lone Cylon Centurion, Red-Eye, who terrorizes the residents on behalf of Lacerta, until Red-Eye is destroyed by Apollo (TOS: "The Lost Warrior").
- Equellus' orbital view is a reuse of Caprica's orbital view during the attack of the colony by the Cylon Raiders (without the Raiders) seen in "saga of a star world".
- Equellus and its inhabitants are revisited, in a roundabout way, in the Dynamite Entertainment comic book Classic Battlestar Galactica Vol. 2 #4.