A hallmark of Gogo's Crazy Bones, and earlier Crazy Bones as well, are the stickers and cards. In Series 1, 2, 3, and 5, flow packs and others come with stickers. In Series 4, collector cards (which can be used in gaming) replaced stickers. In the first 3 series, 3 stickers are issued along with 3 Gogo's. In Series 1, rare stickers are issued for the Wanted and Most Wanted figures. Various identifying marks are incorporated on these particular stickers, e.g. black patterned background and a gold star on a black field on Most Wanted stickers, and a blue background with a white star on a blue field for the Wanted sticker. Wanted and Most Wanted stickers were avalible in a holographic form as well. Series 3 offered two different types: 3 regular, and sheets of 4. 2 Series 4 collector cards are included with 2 figures in regular flow packs, with two types available - those associated with the common figures (80), and 10 special foil cards for the Most Wanted figures in the series. These are rarities. Sets before 2007 came with 4 stickers displaying character artwork on a white sheet with no background.Classic (red) Miro-K, J-Box, Q-Mack, super gogo, Mr. Peako, and yellow Miro-K were issued with ownership certificates in lieu of stickers; in the case of the classic Miro-K, each certificate bears the issue number, read as XXXX/5000, designating each as an individually numbered figure.