guzo is half the bestselling author duo RTMK
Roman Tschäppeler and Mikael Korgerus are RTMK and bestselling authors. Their books have been published in over 25 languages and sold about 1.5 million times. They also write (and draw!) editorials, they design apps and they work for museums and exhibitions. On stage they explain complicated theories in just a couple of lines and do consult und entertain companies worldwide.