Suggestions by @ringothedrummer

Bruce Campbell

as Green Lantern in Superman (2005)

Robin Williams

as Gary in Superman (2005)

Bruce Willis

as Spoiler Character #1 in Superman (2005)

Spoiler

as Spoiler Character #4 in Superman (2005)

Spoiler

as Spoiler Character #3 in Superman (2005)

Spoiler

as Spoiler Character #2 in Superman (2005)

Spoiler

as Spoiler Character #1 in Superman (2005)

Billy Crystal

as Merton McSnurtle in The Flash: Born to Run

David Corenswet

as “How about a race?” in The Flash: Born to Run

Spoiler

as “How about a race?” in The Flash: Born to Run

Laura Dern

as Meet the Garricks! in The Flash: Born to Run

Kyle MacLachlan

as Meet the Garricks! in The Flash: Born to Run

Spoiler

as Meet the Garricks! in The Flash: Born to Run

Shawn Ashmore

as Sam Scudder in The Flash: Born to Run

Joseph Gordon-Levitt

as Barry Allen in The Flash: Born to Run

Gabriel Luna

as Jared Morillo in The Flash: Born to Run

Holt McCallany

as Fred Chyre in The Flash: Born to Run

Charlie Plummer

as Hartley Rathaway in The Flash: Born to Run

Alison Brie

as Iris West in The Flash: Born to Run

Patrick Gibson

as Mirror Master in The Flash: Born to Run