Suggestions by @matthewfenner

Hugo Weaving

as Atomic Skull in Smallville Universe

Score: +1

Peter Dinklage

as Professor Killgrave in Smallville Universe

Score: +1

Joaquin Phoenix

as Boss Sixty in Smallville Universe

Score: +1

Dominic Zamprogna

as Bruno Mannheim in Smallville Universe

Score: +1

Bill Skarsgård

as Scarecrow in Smallville Universe

Score: +1

Kevin Grevioux

as Killer Croc in Smallville Universe

Score: +1

Michael C. Hall

as Hush in Smallville Universe

Score: +1

Hafpor Julius Bjornsson

as Bane in Smallville Universe

Score: +1

Nikolaj Coster-Waldau

as Two-Face in Smallville Universe

Score: +1

Matthew Lillard

as The Joker in Smallville Universe

Score: +1

Jared Padalecki

as Vigilante II in Smallville Universe

Score: +1

Jon Hamm

as Peacemaker in Smallville Universe

Score: +1

Kate Beckinsale

as Catwoman in Smallville Universe

Score: +1

Michael B. Jordan

as Black Lightning in Smallville Universe

Score: +1

Aaron Eckhart

as Adam Strange in Smallville Universe

Score: +1

Chris Pratt

as Captain Atom in Smallville Universe

Score: +1

Liam Hemsworth

as Firestorm in Smallville Universe

Score: +1

Patrick Wilson

as Atom in Smallville Universe

Score: +1

Djimon Hounsou

as Doctor Mist in Smallville Universe

Score: +1

Jason Momoa

as Lobo in Smallville Universe

Score: +1