Gryphon Boss is one of the skins released in the monthly Go Golden offer. It could be purchased as part of an item deal in mid September 2020.
Gryphon Boss could be purchased for $9.99 in a limited time deal which included 4500 coins, a Golden Pass and 370 Tokens. This skin was not available for individual purchase and may not be available for purchase in the future.
Details of this skin may vary depending on location, platform or time.