Since the majority of the joints are ball joints, Rocka features an amazing amount of articulation. He features: ball jointed ankles, ball jointed knees, ball jointed hips, 4x hinged chest clamps, ball jointed shoulders, ball jointed elbows, ball jointed wrists, a ball jointed head, and a hinged visor. These really are very fun figures to pick up and play with, especially if you enjoy twisting and contorting figures into all kinds of crazy poses. There's absolutely no concerns about joints and breakage here and you could play with this thing all day long. These are great figures if you're just wanting something to keep your hands busy while watching TV or fiddling around at your desk. The chest clamps flip out to allow you to remove and insert a small white disc called the Hero Core. I'm not sure what it's supposed to represent, but it's a neat feature nonetheless.
It's tough to talk about sculpt on these guys, but I'm going to try. While the pieces are shared with a number of other figures, they're really nicely designed. While I don't think I plan to collect anymore of these, I do appreciate the aesthetic that Lego was going for. When looking at the figure from the back you can see the unarmored endoskeleton, from the front the armored bits steal the show. Lots of armored plating and such that give the figure a cool, mechanical look. The head is a bit generic, but I think they're unique between figures. A translucent green plastic shows through the gold "face" to give it an interesting, robotic appearance.
Overall, I'm really happy with Rocka. I don't think this s the kind of line I plan on collecting anymore of, but I definitely see the appeal and the quality. This guy retails for $9.99 and I think he's worth every penny. You get both the fun of building a Lego set and a well articulated, fairly large action figure with multiple pieces. When kids can buy a 7 1/4 inch action figure with multiple accessories and lots of articulation for $10 from Lego, no wonder the brick based building toy companies are spanking the traditional action figure lines. Rocka is definitely a fun impulse buy if you're looking for something unique. I'm giving him a Great and a 1/2 rating. There seems to be a huge community of fans of these types of figures, so I'd love to hear from BIONICLE and Hero Factory collectors; why do you prefer these over traditional action figures? Let me know in the comments!
While they don't have this guy in stock, Big Bad Toy Store does have the Jet Pack Rocka figure in stock now. He's much larger and comes with a jet pack, if you couldn't tell from his name.