I visited two other Walmart locations, and a Target, and I did not find these stickers anywhere else. I am wondering if Marvel and Star Wars variations are out there. If not, could this be a sticker that will be included in all the future Transformers Movie figures, to get the Attacktix Buzz going? The latter may make sense, considering the pulling of Transformers Attacktix from (some) Walmarts and Targets.
Please leave a comment if you have found these stickers yourself, and especially if you have a non-TF version.