The following galleries show the heads and skins for Maya. You can also access a spreadsheet listing the heads and skins (along with their source) click on the following image link:
Click on any thumbnail to see the larger image. images are in alphabetical order and match the order on the document.
NOTE: skin #32 is the gearbox skin and not available to players. The image is not shown on these forums at the request of Gearbox.
The 5th DLC Head and Skin for Zer0 can be viewed here: