Jedi Knight Nahdar Vebb is exclusive to set 8095, General Grievous' Starfighter. This is only the third Mon Calimari minifigure to appear in the LEGO Star Wars universe after Admiral Ackbar (sw247) and this Mon Calimari officer (sw248).
Minifigure Parts and Accessories
Nahdar is composed of three parts: a Mon Calimari head, torso, and legs.
The Mon Calimari head does not appear to be a new mold, or have new markings from Admiral Ackbar or the officer.
The torso, however, does appear to feature a new print.
Jedi Vebb has a blue lightsaber as his accessory.
Army Building Potential
The Mon Calimari head might place Vebb into the moderate ABP category; however, once the magnet set featuring Admiral Ackmar...I mean Ackbar launches, then this will be come the more affordable option.
Again, the head is the big draw here, but more affordable means of obtaining the Mon Calimari head may make him a bit moot.
(Picture from BrickHorizon.com)