Suggestions by @arielhambanou

Keiynan Lonsdale

as Ussop in One Piece

Score: +1

Arnold Schwarzenegger

as Monkey D.Garp in One Piece

Score: +1

Gal Gadot

as Nico Robin in One Piece

Score: 0

Ross Lynch

as Sanji Vinsmoke in One Piece

Score: +1

Lewis Tan

as Roronoa Zorro in One Piece

Score: +2

Madelaine Petsch

as Nami in One Piece

Score: 0

Tom Holland

as Monkey D.Luffy in One Piece

Score: 0