guiser (n.)

"masquerader, mummer, one who goes from house to house, whimsically disguised, and making diversion with songs and antics, usually at Christmas," late 15c., 从 guise 派生的动作名词，指在圣诞节期间穿着奇装异服，到处走动，以歌曲和滑稽动作娱乐他人的人。