Django the Bastard (aka Stranger's Gundown, 1969) a movie that was produced and written by Steffen, is considered to be an inspiration for Clint Eastwood's High Plains Drifter. In several of his movies, Steffen starred alongside other Spaghetti Western luminaries such as Gianni Garko, Peter Lee Lawrence, and william Berger. Outside of the Spaghetti western genre, Steffen also appeared in several Giallo movies including The Night Evelyn Came Out of the Grave (1971). His roles and status diminished as the Spaghetti Western genre fell into decline. Amassing a considerable fortune from his career as an actor, Steffen embarked on a jet set lifestyle.