Myths
Mythical and magical non-humans
Dragons and dragon shifters
A race of frost giants who live in peace with the Ihatok
A race of engeniered giants specialized in being able to eat most anything and not die from it and an insatiable hunger. Intended to be a weapon of war to be used against the Meliora, they ended up being turning on their creators and liberating several other races in the process, including the Sihiajan.
An ancient race of size shifters that were thought to have gone extinct. Really the majority went into hybernation. Those that didn't went on to become the Avraan and Ihatok tribes.
Zombies, Ghools, Vampires, Blood Elves, and generally the walking dead!