- Michael Rosenbaum auditioned for the role of Star-Lord in Guardians of the Galaxy.
- Michael Rosenbaum previously worked with James Gunn in James Gunn's PG Porn and Lollipop Chainsaw.
- Michael Rosenbaum previously worked with Bradley Cooper in Brother's Justice and Hit and Run.
- Michael Rosenbaum previously worked with Steve Agee in Hit and Run.
- Michael Rosenbaum previously worked with Jimmy Urine in Lollipop Chainsaw.
- Michael Rosenbaum previously worked with Kurt Russell in Cutlass.
- Michael Rosenbaum previously worked with David Hasselhoff in Kickin' It Old Skool.
- Michael Rosenbaum previously worked with Rhoda Griffis in Midnight in the Garden of Good and Evil and Father of Invention.
- Michael Rosenbaum is one of the actors to portray characters for both Marvel Studios and DC Entertainment. He portrayed Lex Luthor in Smallville and voiced Wally West/The Flash in Static Shock, Justice League, Floyd Lawton/Deadshot, Protester, Martian, Rioter, Arkkis Chummuck, Surfer, Gorilla, Soldier, Guard, Savage Trooper, André Blanc-Dumont , Nazi Soldier, Security Guard, Bald Man, Franzee, Cop, Thug, Cameraman and Thanagarian Soldier in Justice League, Carter Wilson, Terminal, Ollie, Carl and Agent West in Batman Beyond, Justice League Unlimited, Justice League: Doom and Infinity Crisis, Stewart Carter Winthrop III and Ghoul in Batman Beyond: Return of the Joker, Agent West in The Zeta Project, Kid Flash in Teen Titans, Deadman and Triad Boss in Batman: The Brave and the Bold, Drift Leader in Justice League: Throne of Atlantis and Johnny Charisma in Batman: Arkham Knight.
- Michael Rosenbaum shares his birthday with Rachael Taylor and Serinda Swan.
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