Galaxy Guide 12: Aliens — Enemies and Allies

Galaxy Guide 12 -- Aliens: Enemies and Allies is a supplement to the Star Wars Roleplaying Game published by West End Games. It was written by several writers, each of whom wrote on one or more species. In the introductory "flavor text", the book was imagined to be compiled from excerpts from the first draft of The University of Sanbra Guide to Intelligent Life, written by an Iyra sentientologist named Tem Elliss. Professor Ellis was forced to go into hiding from COMPNOR when his book's pro-alien views were discovered by Imperial spies, and the first draft was anonymously leaked to underground communication networks.

The culture, biology, and game statistics of the following sentient species were detailed in Galaxy Guide 12 (authors in parentheses):

Much as in West End Games' earlier sourcebook, Galaxy Guide 4 -- Alien Races, some of the species detailed appeared in the original trilogy, while some were invented for the game. West End Games would follow Alien Races and Aliens: Enemies and Allies with a third book, Alien Encounters.