Suggestions by @mycasteeeeeeeee

Hugh Jackman

as Wolverine in The New Avengers (MCU)

Score: +11

Lucas Till

as Adam Warlock in MARVEL Cinematic Universe (MCU)

Score: -5

Adewale Akinnuoye-Agbaje

as Killer Croc in DC v Marvel

Score: +3

Chosen Jacobs

as Kid Flash in DC v Marvel

Score: 0

Jeremy Irons

as Alfred Pennyworth in DC v Marvel

Score: +2

Daniel DiMaggio

as Iceman in DC v Marvel

Score: +1

August Maturo

as Toad in DC v Marvel

Score: +1

Sterling K. Brown

as Green Lantern (II) in DC v Marvel

Score: +3

Forrest Wheeler

as Green Lantern (II) in DC v Marvel

Score: -2

Ray Porter

as Darkseid in DC v Marvel

Score: +2

Eiza González

as Catwoman in DC v Marvel

Score: +2

J.K. Simmons

as Commissioner Gordon in DC v Marvel

Score: +1

Ralph Fiennes

as Professor X in DC v Marvel

Score: +1

AnnaSophia Robb

as Supergirl in DC v Marvel

Score: +2

Finn Wittrock

as Nightwing in DC v Marvel

Score: +2

Aidan Gallagher

as Robin in DC v Marvel

Score: +1

Finn Wolfhard

as Cyclops in DC v Marvel

Score: +2

Viggo Mortensen

as Magneto in DC v Marvel

Score: +1

Jurnee Smollett

as Black Canary in DC v Marvel

Score: +1

Sadie Sink

as Phoenix in DC v Marvel

Score: +7