Franz Petto's art is characterized by its exploration of crisis and conflict, often infused with a sense of humor. His paintings are abstract, using large quilts of color and heavy lines in a grid structure. Franz employs broad brushes, spatulas, and rollers to achieve his unique style, intensifying brightness with materials like sand and plaster. He dislikes prefab materials, preferring to create from scratch. Franz's work has been exhibited in several galleries, including a solo exhibition at the Tacheles Gallery in Berlin. His paintings have been sold to international collectors and featured in television shows as stage decorations.