Orion VII is the seventh planet in the Orion System, one of several "Orion" colonies and the location of an Earth Alliance colony on the border of Centauri space. Founded in 2178, Orion VII quickly became one of the key trade centers between the Alliance and the Centauri Republic. It was one of the colonies which left Earth Alliance during President Clark's reign.
In 2260, at the onset of the Earth Alliance Civil War, loyalist forces ambushed the EAS Alexander on its way back from a meeting of Resistance leaders at Orion VII. The Alexander was hit amidships by the EAS Clarkstown, killing Resistance leader General William Hague. The Alexander attempted to flee without returning fire with the main batteries, resorting to interceptors and a fighter screen only. When the Clarkstown persisted, inflicting damage that threatened to cripple the ship, Major Ryan was forced to open up with aft batteries, destroying the Clarkstown completely. After retrieving its fighters, the Alexander jumped out of the system bound for Babylon 5.
Shortly afterwards, under order from EA President Clark, Earthforce began bombing civilian targets on the Mars colony in retaliation for Mars Provisional Government head Xavier Montoya's refusal to enact Clark's Martial Law Decree. In protest, Orion VII along with Proxima III declared independence from the Earth Alliance, setting themselves up as independent states until such time as Clark was impeached. Just after the announcement the EAS Churchill also left Orion VII for B5 after intercepting transmissions relayed to the EAS Agrippa and EAS Roanoke to seize B5 and arrest the command staff. ISN received word of Orion and Proxima's secessions but was ordered by Earthgov not to report it. When some of the reporters attempted to breach the gag order armed troops moved in on the ISN Broadcast Centre in Geneva, forcing the station off the air. By the end of the day Babylon 5 had also declared its independence.
- Flame birds: The symbiotic race called Vindrizi claimed that these creatures existed on the planet at some point in the last half million years.