Neutral
The events of Star Control II are part of a major galactic war between the established Ur-Quan Hierarchy and the atavist New Alliance of Free Stars. Several races are not aligned with either faction, but still interact with the members.
Neutral Worlds
Druuge
The Druuge are shrewd businesspersons, first and foremost. They appear to have avoided Hierarchy membership by selling-out the neighbouring Burvixese while maintaining relations with the Utwig. The Captain can have a range of interaction with them, including slave trade, barter and war, but the Druuge remain well outside of both the Alliance and the Hierarchy.
Melnorme
The Melnorme are a transient and inevitably successful people who trade in advanced technology and intelligence. They can be a major help to the New Alliance without entering any formal agreements, and it was them who sold the ill-fated Probe to the Slylandro. There are no reported links between the Melnorme and the Hierarchy worlds. The Melnorme have no Sphere of Influence.
Slylandro
The Slylandro are a gaseous people who live extremely long lives and cannot leave their homeworld. They tell the The Captain about receiving friendly visits from the Precursors, the Ur-Quan and, more recently the Melnorme and Humans. The Slylandro have no Sphere of Influence.
Spathi
The Spathi wanted to be slave shielded in order to follow a policy of isolationism and neutrality. Due to a communication error, they became Battle Thralls, but then defected to the New Alliance at their first opportunity and used the relationship to study the Slave Shield around Earth, which they replicated at Spathiwa.
Unofficial Alliance Members
Three races affiliate themselves tactically with the New Alliance but do not make their ships available for construction at the starbase. Because of this detail, many Humans do not consider them to be full members of the Alliance.
- The Arilou Lalee'lay were members of the original Alliance before disappearing. In the mid 2150s, they are (optionally) contacted by the Captain and provide aid to the Alliance. They send a delegation to the Earth Starbase like a full member but do not allow for the construction of their ships, choosing instead to donate a few during their visit.
- The Pkunk are at war with the Battle Thrall Ilwrath and will support the New Alliance even as they become heavily involved the in Yehat Rebellion (on the pro-Alliance side), but they do not formally enter into the Alliance nor the Hierarchy.
- The Rebels are a faction of the Yehat torn between allegiance to their Queen and to their old Allies. The Yehat were members of the original Alliance before defecting to the Hierarchy in 2234 and becoming Battle Thralls. They (might) eventually split into warring factions with the Royalists continuing as Battle Thralls and the Rebels supporting the Alliance without becoming full members.
(Optional) Neutral Worlds
The Orz, Supox, Utwig and Zoq-Fot-Pik are all free from the Hierarchy and will remain effectively neutral unless the Captain invites them to join the New Alliance.