Battlemind

4E Battlemind, so smart he has a halo!

The Battlemind is a warrior who blends physical prowess with psionic powers in order to kick ass and chew bubble gum, the latter of which he may or may not be out of. Also known as the Fightbrain, a name often brought up to criticize the dubious naming conventions used by WOTC (despite the fact the term Battlemind has been around since 2E.)

Dungeons & Dragons: Fourth Edition

The Battlemind is standard where D&D psionic characters are concerned; they're melee combatants that have honed their mind as much as their body to tap into their psionic powers and use them in combat to their advantage. Generally, Battleminds generally consider themselves to be the ultimate warriors, laughing at puny fighters who master silly "weapons" or Wardens who grow flowers on their foes to death. And don't get them started on Paladins!

Mechanically, Battleminds are the undisputed best Defender class available in 4E. While most Defenders can mark their opponents and hinder their ability to attack their allies, Battleminds liberally punish their foes, and themselves are generally impervious to damage. This is due to the fact that their mark mechanic, Battlemind's Demand, doesn't just penalize them -2 for attacking allies; it also enables them the ability to use the Mind Spike power as an immediate reaction should the foe hit. So while many defenders may try to cushion the blows or prevent them from hitting their allies altogether, Battlemind's simply return all the damage dealt back to the attacker. This, paired with their various powers that grant them Resist All towards damage, and the Iron Guardian Paragon Path that makes them further impervious to harm so long as they don't attack. Adding in some methods to power up Mind Spike, they can pretty much turn themselves invincible and attack enemies through their own damage when they harm the Battlemind's allies. In short, don't fuck with Battleminds.