Crazy Eye is one of the three skins released under the Dark Dimension Zone offer. It could be purchased individually with game coins in early February 2018.
Crazy Eye could be purchased in the Skins Shop under the 'Dark Zone' tab for 1900 coins. This skin was available for a limited time and may not be available for purchase in the future.
Details of this skin may vary depending on location, platform or time.
Note: The Dark Dimension Zone offer with the Crazy Eye skin was released again in early January 2019 and then in late May 2021. The cost for Crazy Eye remained at 1900 coins for each of these limited time releases.