Otto says about his work:

"These are universal archetypes that may be found deep inside our collective unconscious. While seemingly extraterrestrial and alien, they are also strangely familiar. l'll take the viewer into an area that they might have been before in another existence or have entered in their dreams. It is a 'method in this madness' but everything arises  by elimination of conscious guidance. The work grows seemingly by itself, like frost flowers on a windowpane. "