Suggestions by @watchmen

Jacob Tremblay

as Jon Osterman (child) in Before Watchmen: Dr. Manhattan

Dennis Quaid

as President Ronald Reagan (alternate future)) in Before Watchmen: Dr. Manhattan

Liev Schreiber

as President Lyndon B. Johnson in Before Watchmen: Dr. Manhattan

Rich Sommer

as Wally Weaver in Before Watchmen: Dr. Manhattan

Christopher Lloyd

as Professor Glass in Before Watchmen: Dr. Manhattan

Tommy Lee Jones

as President Richard Nixon in Before Watchmen: Dr. Manhattan

Maya Hawke

as Silk Spectre II in Before Watchmen: Dr. Manhattan

Joaquin Phoenix

as Rorschach in Before Watchmen: Dr. Manhattan

Jake Gyllenhaal

as Nite Owl II in Before Watchmen: Dr. Manhattan

Caspar Phillipson

as President John F. Kennedy in Before Watchmen: Dr. Manhattan

Jennifer Connelly

as Janey Slater in Before Watchmen: Dr. Manhattan

Michael Fassbender

as Dr. Manhattan in Before Watchmen: Dr. Manhattan

Sebastian Stan

as Nite Owl in Before Watchmen: Dr. Manhattan

Ben Affleck

as Captain Metropolis in Before Watchmen: Dr. Manhattan

Tom Hardy

as The Comedian in Before Watchmen: Dr. Manhattan

Matt Bomer

as Ozymandias in Before Watchmen: Dr. Manhattan

Hans Zimmer

as Composer in Before Watchmen: Dr. Manhattan

Christopher Nolan

as Writer in Before Watchmen: Dr. Manhattan

Christopher Nolan

as Director in Before Watchmen: Dr. Manhattan

Dave Gibbons

as Producer in Before Watchmen: Dr. Manhattan