Suggestions by @matthewfenner

Sam Jones III

as Pete Ross in Smallville Universe

Score: +1

Sam Jones

as Pete Ross in Smallville Universe

Score: -1

Britt Irvin

as Stargirl in Smallville Universe

Score: +1

Chloë Grace Moretz

as Raven in Smallville Universe

Score: +1

Elias Toufexis

as Emil LaSalle in Smallville Universe

Score: +1

Jessica Parker Kennedy

as Plastique in Smallville Universe

Score: +1

Bradley Stryker

as Deadshot in Smallville Universe

Score: +1

Hayden Christensen

as Wild Dog in Smallville Universe

Score: +1

Alessandro Juliani

as Dr. Emil Hamilton in Smallville Universe

Score: +1

Cassidy Freeman

as Red Tornado II in Smallville Universe

Score: +1

Phil Morris

as Martian Manhunter in Smallville Universe

Score: +1

D. B. Woodside

as John Diggle in Smallville Universe

Score: +1

Ted Whittall

as Rick Flag in Smallville Universe

Score: +1

Elena Satine

as Mera in Smallville Universe

Score: +1

Margot Robbie

as Miss Martian in Smallville Universe

Score: +1

Laura Vandervoort

as Supergirl in Smallville Universe

Score: +1

Elle Fanning

as Speedy in Smallville Universe

Score: +1

Jake T. Austin

as Blue Beetle in Smallville Universe

Score: -1

Matt Ryan

as John Constantine in Smallville Universe

Score: +1

Serinda Swan

as Zatanna Zatara in Smallville Universe

Score: +1