barbarian

A barbarian can be an excellent warrior. While not as disciplined or as skilled as a normal fighter, the barbarian can willingly throw himself into a berserker rage, becoming a tougher and stronger opponent. The barbarian uses the fighter avatar. In ToB, the Barbarian can draw from a high level ability pool which gives the Barbarian some extra abilities.

advantages:
They move at 2 points faster than the usual character.
Barbarians are immune to backstab.
Can Rage once per day for every 4 levels (starts at 1st level with one use). Rage gives them +4 to constitution and strength for 5 rounds. Gives a -2 armor class penalty and +2 to saves vs. magic (for 5 rounds). Rage also gives immunity to all charm, hold, fear, maze, confusion and level-drain spells.
At 11th level, the barbarian gains 10% resistance to slashing, piercing, crushing and missile damage. He gains +5% to this every 4 levels thereafter.
The barbarian rolls d12 for hit points instead of a fighter's d10.

disadvantages:
A barbarian cannot wear full plate or plate mail.
A barbarian cannot specialize past normal specialization.