Marcel Duchamp (who made one experimental film) as Rrose Sélavy

Joel Coen as Roderick Jaynes.
Dziga Vertov (‘Spinning Top’)
Chris Marker is actually a nom de plume, not surprising considering he’s also Sandor Krasna and god knows how many other time travelers.
—DiB
I wish more directors would use pen names/alter egos.
Guilty as charged. Sorry kids.
John Ford was of course the alter ego of one John Martin “Jack” Feeney, who also sometimes presented himself as Sean Aloysius Feeney.
Don’t forget David Lynch as Judas Booth for Dune!
Jesse Richards
Sorry Matt Parks, but you brought this one on all of us…
David Lynch as Gordon Cole