VGFacts

After Skylanders: Spyro's Adventure had been released, a custom figure creator known as Jin Saotome began producing custom Skylander figures. One of his figures, a custom Drobot, was featured at the back of a Skylanders Giants commercial (2:05):




Link to Jin Saotome's Drobot Page

Other Drobot figures for comparison. (taken off the spyro wiki)
http://spyro.wikia.com/wiki/Drobot





The custom figure appears to more closely mirror the art displayed on the packaging.

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After looking at the page where the custom is sold, its main point is that its pose-able, unlike the normal figures.