Suggestions by @ivankarp

Stan Laurel

as March Hare in Alice in Wonderland (1937)

Score: +1

W.C. Fields

as Dodo in Alice in Wonderland (1937)

Score: +1

Billy Gilbert

as Tweedledee in Alice in Wonderland (1937)

Score: +1

The Three Stooges

as The Playing Cards in Alice in Wonderland (1937)

Score: +1

W.C. Fields

as Humpty Dumpty in Alice in Wonderland (1937)

Score: +1

W.C. Fields

as The Walrus in Alice in Wonderland (1937)

Score: 0

Ed Wynn

as Mad Hatter in Alice in Wonderland (1937)

Score: +1

Oliver Hardy

as Tweedledum in Alice in Wonderland (1937)

Score: +2

Groucho Marx

as Cheshire Cat in Alice in Wonderland (1937)

Score: +1

Joe E. Brown

as Little Bill in Alice in Wonderland (1937)

Score: +1

Stan Laurel

as Mock-Turtle in Alice in Wonderland (1937)

Score: +1

Shirley Temple

as Alice in Alice in Wonderland (1937)

Score: +1

Maurice Chevalier

as Bishop Myriel in Les Miserables - musical film (1967)

Score: +1

Mark Lester

as Gavroche in Les Miserables - musical film (1967)

Score: +1

Buster Keaton

as Mabeuf in Les Miserables - musical film (1967)

Score: +1

Orson Welles

as Javert in Les Miserables - musical film (1967)

Score: 0

Maurice Chevalier

as Jean Valjean in Les Miserables - musical film (1967)

Score: +1

Russ Tamblyn

as Enjolras in Les Miserables - musical film (1967)

Score: +1

Audrey Hepburn

as Fantine in Les Miserables - musical film (1967)

Score: +1

Ed Wynn

as Mabeuf in Les Miserables - musical film (1967)

Score: +3