Suggestions by @user12891

Aaron Ashmore

as Jimmy Olsen in Smallville Universe(story removed)

Score: +1

Keri Lynn Pratt

as Cat Grant in Smallville Universe(story removed)

Score: +1

Jensen Ackles

as Jason Teague in Smallville Universe(story removed)

Score: +1

Callum Blue

as Zod in Smallville Universe(story removed)

Score: +1

Sam Witwer

as Doomsday in Smallville Universe(story removed)

Score: +1

Michael McKean

as Perry White in Smallville Universe(story removed)

Score: +1

Pam Grier

as Amanda Waller in Smallville Universe(story removed)

Score: +1

James Marsters

as Brainiac/Brainiac 5 in Smallville Universe(story removed)

Score: +1

Serinda Swan

as Zatanna in Smallville Universe(story removed)

Score: +1

Alaina Huffman

as Black Canary in Smallville Universe(story removed)

Score: +1

Brittney Irvin

as Stargirl in Smallville Universe(story removed)

Score: +1

Helen Slater

as Lara-El in Smallville Universe(story removed)

Score: +1

Eric Johnson

as Whitney Fordman in Smallville Universe(story removed)

Score: +1

Lee Thompson Young

as Cyborg in Smallville Universe(story removed)

Score: +1

Phil Morris

as Martian Manhunter in Smallville Universe(story removed)

Score: +1

Kyle Gallner

as Impulse in Smallville Universe(story removed)

Score: +1

Michael Rosenbaum

as Lex Luthor in Smallville Universe(story removed)

Score: +1

Terrence Stamp

as Jor-El in Smallville Universe(story removed)

Score: +1

Cassidy Freeman

as Tess Mercer in Smallville Universe(story removed)

Score: +1

Justin Hartley

as Green Arrow in Smallville Universe(story removed)

Score: +1