Michael Herbig said that the role of Ignaz, who can be barely understood, was inspired by Brad Pitt's character in Snatch - Lo strappo (2000).
For the Spanish version (for Spain), Anabel Alonso did the voice of Lissi, Josema Yuste as Franz and Florentino Fernández as Yeti, Erwin Falthauser, Franz's father and Michael Herbig playing himself.
The character König Bussi von Bayern is a direct reference to King Ludwig II. of Bavaria, known as the fairytale king, who built the Castle Neuschwanstein, which was spoofed in this movie as Schloss Neuzahnstein (Castle New Dental Calculus) and was engaged to Sophie of Bavaria, the sister of Queen Elisabeth of Austria (known as Sissi).