This K-3PX figure was released in a Walmart exclusive 2-pack in 2008. The Protocol Droid (re-programmed to be Vader's espionage droid) was packed-in together with a Darth Vader figure. K-3PX is super articulated with 14 joints, including ball-jointed shoulders, elbows and a ball-jointed upper torso.
The Protocol Droid's paint application is kept very basic with only gray and black. In the Marvel Star Wars comics, the droid appeared with a lot of blue accents on the body and yellowish eyes, but the dark gray color and the black on the eyes looks probably nicer when he's on display with all your other non-comic Star Wars figures. K-3PX stands very securely on his own and doesn't have any balancing problems. There were no weapons or accessories included with the figure.
All in all it's a decent K-3PX figure, with a basic paint application, no weapons or accessories. It'll make for a great background character in a diorama, and if you are a fan of the old Marvel Star Wars comics, chances are that you'll like this figure.