The Superior Defender perk is earned upon completion of The Local Flavor quest.
When the player character is standing or crouching in place, it adds +5 points of damage to weapons and +10 points to Damage Resistance. The benefits are reported in the Pip-Boy under the "Effects" screen.
The +5 damage is added to each bullet, making it far more powerful when used with automatic weapons, especially with the Minigun or the Gatling laser, and their variants. The minigun will have its damage almost tripled.
Behind the scenes
The icon resembles a Greek Hoplite. This may be a reference to the Battle of Thermopylae, where Sparta and several other Greek-city states made a last stand and held off hundreds of thousands of Persian invaders from advancing into Greece.
- Because the player must be standing still to use the Pip-Boy, the +5 damage effect and DR bonus appears to be constantly in effect unless the player is in the air. The bonus is applied correctly, however. It is purely a visual bug (patched on the Steam GOTY Edition). [verified]
- There is a slight (~1 second) latency between moving or stopping and the perk effect being removed or added. [verified]