Fidus was the pseudonym used by German illustrator, painter and publisher Hugo Reinhold Karl Johann Höppener (October 8, 1868 – February 23, 1948). He was a symbolist artist, whose work directly influenced the psychedelic style of graphic design of the late 1960s.
Franz Ritter von Stuck (February 23, 1863 – August 30, 1928), born Franz Stuck, was a German painter, sculptor, printmaker, and architect. Stuck was best known for his paintings of ancient mythology, receiving substantial critical acclaim with The Sin in 1892. In 1906, Stuck was awarded the Order of Merit of the Bavarian Crown and was henceforth known as Ritter von Stuck.