Marvel’s Avengers will reward you with a set of cosmetic hero skins if you’re a Virgin Media customer here in the UK. In the US, the items will also be available if you use mobile phone network Verizon.
A second set of cosmetics has also been found, apparently for release via a promotion with Intel. These seem more elaborate, and offer new clothing as well as a new colour scheme.
Twitter user PlayAvenger has been doing a good job rounding these up and you can see both sets in the post below. The Virgin Media skins are coloured red.