Bratworst the Mustard Firing Sausage Dog Sidekick is a character in Moshi Monsters and is the companion of Commander Sassafras. They first appeared in issue 25 of the Moshi Monsters Magazine, as an illustration with the Missing on a Star story. However, they do not appear nor are mentioned in any fiction surrounding "Missing on a Star". In the files of the Katsuma Unleashed game, the files for them are listed as "Bratworst" thus confirming their name. Outside of this and the tweet below, Bratworst has never had a direct reference to their name in any form of media or fiction.