ZZ was an initialism that the Koreans used in League of Legends to indicate someone's ID or game term. In League of Legends, zz was usually used to refer to " Mr. Z " or " Team Z " because these people's names had letters related to " Z ". For example," Mr. Z " might refer to " Zack " or " Zac " and " Team Z " might refer to " Zoo " or " Zook ". ZZ could also be used to indicate the ID of a game character, such as " ZZ Strawberry "," ZZ Little Zhi ", etc.