A Monk
A character that is a master of immobilizing enemies. Stun, slow, knock back, you name it.
Its also easy to add in the game because your weapon is your own gauntlets. Maybe add something that should go on weapon slot to add damage to its attacks.
Might also add monk faction?
Possible skills:
Fatal blow: your next attack will deal a massive damage and have a chance to stun your target.
Will power: will increase your defense for short duration.
Focus: Will channel for short duration and will increase base attack for a while.
Comeback: will deal damage base on missing health. Lower health more fatal damage.
Impale: will push enemies around you and slow them for small duration.
Tackle: Relentlessly hit an enemy, but suffer from impact. (armor reduces impact damage).
Special: Have bonus spirit resistance, Master of impairing effects.