Ulan & Bator is a German theater and comedy duo consisting of Sebastian Rueger and Frank Smilgies. After appearing on different German comedy shows, the duo premiered its first cabaret show called Wirrklichkeit in 2007. Ulan & Bator's shows often include a lot of improvisation and audience interaction. Rueger and Smilgies portray various characters with the help of their signature bobble hats.