28 suggestions

Mark Ruffalo
as Barney Calhoun in Half-Life 2
Morgan Freeman
as Eli Vance in Half-Life 2

Zendaya
as Alyx Vance in Half-Life 2
Hugh Laurie
as G-MAN in Half-Life 2

Christian Bale
as Gordon Freeman in Half-Life 2

Gabe Newell
as Producer in Half-Life 2
James Gunn
as James Gunn in Half-Life 2
James Gunn
as Director in Half-Life 2