The Appendage add-ons are for RotF Superion (the version released in North America, an exclusive to Target in the United States, Zellers in Canada, and major retailers in Europe) and for Universe Superion (Asia). The original mold comes from Energon Superion Maximus, which can be seen here on the galleries of Seibertron.com. This product is made by FansProject, and is not retailed, or endorsed by Hasbro or TakaraTomy. For more images of the appendage, they can be found here in another story, all the way back from May.
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