For my novel, I've come up with multiple alien races that each play a role in the plot (two species in particular play a major role alongside the humans and one species is the centre of one of the stories). One of my writing techniques for making characters is building that character before putting a name to them and I have tried doing that with species. With one species I rearranged letters used in a short description and with another I used a very, very loose translation of a Latin term. I'm kinda stuck on as far as names go on these two other species though. As I've been jotting down ideas I've referred to them as "Species X" and "Species Y" Species X: Inspired by the Krogan from the Mass Effect series, these large, reptile-like people make great warriors, however they aren't as aggressive as the Krogan. They are also excellent scientists and they are afraid of how much power religion can have over a species due to a dark history involving a tyrant who used religion to rise to power and rule with an iron fist. They know how to fight, but they prefer not to in most situations. Their army is impressive but seems weak compared to the army of the antagonist species. The antagonist species relies on sheer numbers to win, while Species X relies on their firepower, armour and endurance against the enemy. Species Y: A race of humanoids who evolved from birds. As they are the latest species I've come up with their look is still a work in progress, but their culture is something I've got more material on. They live on the same planet as Species X and prefer not to use guns as some of their species sticks to their tribal roots. Their melee weapons have been enhanced to be able to cut through most metals and in combat they will use guerilla tactics. They lost the ability to fly a long time ago due to evolution but many use flightsuits to glide as well as other technology. Before the downfall of the tyrant's rule, these two species hated each other and they had to put their differences aside in order for the uprising to work. When they fight side-by side, Species Y will often attack from an angle that leads the enemy into the firing range of species Y.