Suggestions by @bendf

Hamish Linklater

as The Shade in Justice Society: Countdown To Mystery

Score: +1

Mark Hamill

as Eclipso in Justice Society: Countdown To Mystery

Score: +1

T'Nia Miller

as Vixen in Justice Society: Countdown To Mystery

Score: +1

Bruce Greenwood

as Doctor Fate in Justice Society: Countdown To Mystery

Score: +1

Kate Siegel

as Valentina Vostok in Justice Society: Countdown To Mystery

Score: +1

Ethan Slater

as Mad Hatter in Batwoman

Score: 0

Katharine Isabelle

as March Hare in Batwoman

Score: +1

Nicola Peltz Beckham

as White Rabbit in Batwoman

Score: +1

Jodie Comer

as Julia Pennyworth in Batwoman

Score: +1

Oliver Phelps

as Tweedle-Dee in Batwoman

Score: +1

James Phelps

as Tweedle-Dum in Batwoman

Score: +1

Theo James

as Batman in Batwoman

Score: +1

Billy Burke

as Jacob Kane in Batwoman

Score: +1

Diane Guerrero

as Rene Montoya in Batwoman

Score: +1

Tamlyn Tomita

as Red Queen in Batwoman

Score: +1

Iwan Rheon

as Mad Hatter in Batwoman

Score: -2

Brianne Tju

as Bluebird in Batwoman

Score: +1

Jaz Sinclair

as Brightbat in Batwoman

Score: +1

John Boyega

as Batwing in Batwoman

Score: +1

Karen Fukuhara

as Mary Hamilton Kane in Batwoman

Score: +1