Information is definitely out-dated, and you shouldn't really take it to heart.
This was the boss that was supposed to replace the Rhi-snow as the Christmas 2016 boss. It was announced publicly by PlaceRebuilder while he was playing on a server. However, the replacement was cancelled due to unknown reasons, and Rhi-snow remained the Christmas 2016 event boss.
Papa G. Bread was the leader of the Gingerbread Men. He started a revolution because he wanted Christmas to be recognized as an official holiday in the peaceful Cake Kingdom. Eventually, his anger management and his bad habits lead him to order his loyal gingerbread army to start invading the Cake Kingdom. The survivors, who just happened to be travelling nearby, are the kingdom's only defenders against these sentient and explosive gingerbread cookies.