besides the kafers, 2300 hosted a number of alien races. here's a brief description for you stright from the 2300 directors guide and kafer sourcebook.
the ylii are a rather timid race conquered by the kafers and are responsible for much of the kafers high technology. they evolved around a dim star and therefore have a rather goggle-eyed appearance. they are also unusual in that they consist of a number of sub-races. imagine chimps, gorilla, humans, etc. all evolving intelligence at the same time. sort of a planet of the apes thing.
next come the pentapods. a race looking like a bunch of upright squids. their mastery of biotechnology allows them to make tailored items for sale to humans. they also do the same thing to themselves if needed.
the klaxun were introduced in the first adventure. a combination of animal and plant, they are very primitive. they resemble a tentacled tree with quartz 'eyes'.
the ebers are tall, heavy, with short legs and very long arms whose elbows nearly reach the ground. they were once very advanced but blew themselves back to medieval technology. long-lived, they are noticable for having a multiple-personality thought process.an example given is a person giving different answers to a question depending whether they are considering the question as a father, businessman, scientist, etc.
the sung are the first alien race to engage in a war with humans. having no stutterwarp drive, the humans won easily. the sung are a race of fliers somewhat resemblimg traveller's droyne. their society calls for more advanced civilizations to conquer and educate less advanced ones. sort of an alien white man's burden. they applied this to each other, then another race found in their system. misunderstandings with humans led to the short-lived Sung War.
the 'enslaved' race in question is the xiang. they look like ten-legged crabs with the front legs developed into arms. a peaceful race of artists, they make their lives around their 'dirt-mothers', a large disk-shaped plant with which the xiang are symbiotically intertwined with.
i hope this helps.
