From publisher blurb: Introducing an all-new way to build Starfinder PCs, Starfinder Species Expanded builds upon the new species rules for Starfinder that was introduced in Starfarer Species Reforged. This product has everything you need to build flexible and fun player characters belonging to over several new playable species. Within this expansion PDF, you’ll find: Creature Compeers, a new ruleset for creating sidekick characters using the rules for Player PCs found in Starfarer Species Reforged.