Bubi (real name Hans Winkle) is the "lovely companion" of Frau Engel. He is one of the junior apprentice to the Greater German Empire. Also affectionately called by Frau Engel as "Bubi", he comes from a family of academics. His father is a doctor and his mother is a biologist. As a child, his failing grades and lack of ambition were very disappointing to his parents.