The Buskin mask is the reverse of the sock mask, expressing a theatrical sad face. Using the option flip, the buskin mask can be turned into a sock mask and vice versa. The masks have no bonuses and can be stored in a Toy box in a Player-owned house.
The mask was obtained by completing the crossover event's puzzle. This was started by speaking to Fame in the Theatre on the top floor of the keep in the Grim Reaper's Citadel. Fame would give a Runefest puzzle book, which contained 26 questions to answer - all of which would be related to the surrounding citadel. The answers to each of the questions would be a number between 1-26 for regular players, and A-Z for Runefest attendees. These then needed to be matched question number by all players to find the corresponding numbers for each of the letters of the word 'PASSWORD', and so a correspondence between Runefest attendees and other players was required. Players could then tell Fame these numbers to receive the mask.