We all know the fairy tale, a gingerbread man cookie comes to life and flees from the people to not get eaten only to be tricked by a fox and eaten by said fox. In its final moments, the cookie cursed saying that his descendants would become "doughy".
This is Kekse (German for cookie) the present day descendant of that fox. He's not actually made of gingerbread, the curse justs makes him look and smell like a gingerbread fox as well as inexplicably fill his stomach with dough; he has to exercise like a madman to not be rendered immobile but it's tricky as his sweat releases his scent and draws in hungry people.