
Summary
As his name would imply, the Barbarian is a character primarily skilled in brutal hand-to-hand combat and an unbelievable ability to grow more powerful and frenzied as a battle progresses while his enemies tire and fall.
Since Diablo 3 takes place 20 years after the events of Diablo 2, he has a noticeably older appearance and a far more grim expression. The former can be explained simply by the passage of time, but the latter was probably caused in part by the events of Diablo 2.
The Barbarian tribes were charged with the task of protecting the Worldstone and, by extension, Sanctuary itself. Their entire society was based around this charge so the Worldstone's destruction at the end of Diablo 2 was bound to have strong and far-reaching implications for these people, the majority of which have not been explained yet. More details will be posted as soon as they are revealed.

The Diablo III Barbarian is an evolutionary improvement on the Diablo II Barbarian. He (or she) retains some of the same skills, such as Whirlwind and Leap Attack, but has a variety of new skills to unleash on his (or her) enemies and seems to play with a more violent crushing style exuding power and devastation with her every movement.
In my journey to catalogue the various denizens, civilizations, and fauna of our world, I have traveled far and wide, but never before have I been struck with such dismay as when standing upon the ramparts of the ancient fortress of Bastion's Keep. I came to see firsthand the barbarians, those near-legendary, immense, relentless, dual-wielding furies of combat dwelling upon their sacred Mount Arreat.
Instead, I stand here looking at a mountain that has been torn asunder by some extraordinary force. The sight, I must confess, is incomprehensible. Yet what I see before me cannot be denied. What truly happened here? Where are those majestic warriors of old?
Though they were once misunderstood as simple, bloodthirsty invaders, the long and noble history of these proud people is now rightly acknowledged. And therein lies the greater tragedy here, for those of us familiar with the nobility of the barbarians remember too what they call their "vigil", the concept that lay at the very heart of their culture. The barbarians consider it their sworn duty to protect Mount Arreat and the mysterious object within. They believe that if they fail to uphold their duty to the great mount, or are not given a proper burial upon its slopes, they will be denied a true warrior's death, and their spirits shall roam the land without honor for all eternity. If there are any barbarians left alive, they must truly be without hope. Perhaps this is the genesis of the rumors of monstrous things reported to resemble the barbarians in size and ferocity, but that are in reality nothing more than unreasoning, inhuman beasts. Could the destruction of not only their home but also their very beliefs have actually brought this magnificent race so low? - Abd al-Hazir
Starting Attributes