Skull Jack comes from the Xevoz line from Hasbro. It is a combination game / action figure system, where players battle for parts by rolling a custom die, included with the kit. Hasbro describes it like this:

SkullJack

Custom-build your own unique action figure, then battle it against a friend with XEVOZ battling figure kits! The snap-together ball and socket system makes for easy assembly, outstanding possibility and incredible interchangeability.

Each 5? scale figure comes with an array of Power Parts ? the key to battle strategy. You decide which ones to build into your figure. Then build a matching BATTLE HELIX to roll like dice in battle against an opponent!

Combine parts from different XEVOZ kits, and try out new figure and BATTLE HELIX designs as your skills and strategy improve. It?s a totally new challenge every battle!

Each kit contains an unassembled figure, extra figure and game components, decals, accessories and a complete data file.

This particular figure, Skull Jack is one of the bad guys, or UNNATURALS as they are called. The figure itself comes with a million little bits that you can attach to the figure in various ways. Once assembled, Skull Jack can be out into some pretty crazy poses, and not many action figures can do this. Skull Jack comes with a sticker sheet, with lots of extra stickers. There really is no guide as to where to put the stickers - the idea is to customize them to your liking.

SkullJack

XEVOZ were designed by the group that did the STIKFAS line, also by Hasbro. Unlike STIKFAS, these do not come on a sprue like a model kit, making it a much more accessible toy. Parts snap together with ease, and stay intact through play.

I really can't comment on the game play because, as a 30 year old male, I can't figure these things out anymore. But I can't help but think that action figures and games don't mix. Several companies have tried to combine gaming and action figures in the past, but none have really succeeded. It seems you need a popular game first (i.e. Pokemon, Yu-gi-oh!) and then develop the toy line afterwards. Kids like to keep cards in their pockets, not action figure parts. But that's just my opinion. The figures themselves are fantastic and I hope the line does well. Some of the upcoming XEVOZ toys shown at toy fair looked really promising.