A barbarian is a human who is perceived to be either uncivilized or primitive. In idiomatic or figurative usage, a "barbarian" may also be an individual reference to a brutal, cruel, warlike, insensitive person.
The term originates from the Greek: βάρβαρος (barbaros). In ancient times, the Greeks used it mostly for people of different cultures. In the early modern period and sometimes later, Greeks used it for the Turks, in a clearly pejorative way.
Comparable notions are found in non-European civilizations, notably China and Japan. During the Roman Empire, the Romans used the word "barbarian" for many people, such as the Germanics, Celts, Gauls, Iberians, Thracians, Parthians, and Sarmatians.
Ancient warriors that still battle among the Greek ruins of the Atlantis Shrine. They come armed with a spiked mace and wear a rather peculiar-looking helmet. They attack by performing long lunges with their weapon. When hit, they will stagger and be knocked back a bit, canceling their own attacks.
While not boasting a particularly high amount of health, they can often be found obstructing the only piece of ground available for the player to proceed, usually where it's hard to hit them with the hero's main weapon. In these cases, it's advisable to take them out with ranged attacks, sometimes even justifying the use their weapon's ultimate attack.