Although trained in building engineering, Nebel went off to acting classes before the outbreak of WWI. After the war he discovered Frank Marc and turned to art. In Berlin he joined the circle of Hermath Walden and Der Sturm gallery, often collaborating on its Journal. In these years he became friend with Kandinsky, Klee, Schwitters, Muche and Moholy-Nagy. In 1923 he founded the Der Krater Group. With the rise of Nazism, Nebel left for Switzerland, where he lived with the support of the Guggenheim Foundation, thanks to the intervention of Kandinsky and Hilla von Rebay.
Paul Klee / Kurt Schwitters / Wassily Kandinsky / László Moholy-Nagy