Suggestions by @thehellblazer

Dermot Mulroney

as Jeremiah Parrish in Astro City (TV Series)

Score: +2

Charlie Rowe

as Star Boy in Legion of Super-Heroes

Score: +1

Sean Keenan

as Pyro in X-Men

Score: +1

Jane Levy

as Vicki Vale in Batman

Score: +1

Patrick Renna

as Condiment King in Batman

Score: +1

Josh Gad

as Tweedledum and Tweedledee in Batman

Score: +1

Lucas Till

as Longshot in Exiles

Score: +1

James Cromwell

as Johnny Thunder in Justice Society of America

Score: +1

Ricardo Hoyos

as Cosmic Boy in Legion of Super-Heroes

Score: +1

Margot Robbie

as Harley Quinn in Batman

Score: +1

Simon Pegg

as Tweedledum and Tweedledee in Batman

Score: -1

Robert Englund

as Alfred Pennyworth in Batman

Score: +1

Elliot Fletcher

as Mon-El in Superman

Score: +1

Noah Schnapp

as Superboy II in Teen Titans

Score: +1

Noah Schnapp

as Superboy II in Superman

Score: +1

Sally Field

as Martha Kent in Superman

Score: +1

Michael Gambon

as Jonathan Kent in Superman

Score: +1

Laurence Fishburne

as Perry White in Superman

Score: +1

Jordan Calloway

as Superman - Earth-2 in Justice Society of America

Score: +1

Grayson Russell

as Accountable - Earth-2 in Justice Society of America

Score: +1