Number 21

"Who keeps Springfield beer kegs filled? We do!"

- Number 21's unlock message.

Number 21 was a costume for Moe during the Stonecutters 2014 Event.

He returned as a premium costume on Feb. 7, 2015 as part of the Stonecutters Black Market Sale.

He returned on January 3, 2018 during The Buck Stops Here 2018 Event as a rebate offer. It gave a bonus of 40 donuts after purchasing. He returned on January 9, 2019 during the Not Yet Spring Cleaning 2019 Event with the same rebate.

Trivia

 * From Season 6, Episode 12 “Homer the Great”.
 * His number is a reference to the legal drinking age.