Half-Life 2: 20th Anniversary Documentary

Gabe Newell

as

Self

David Riller

as

Self

Viktor Antonov

as

Self

Robin Walker

as

Self

Bill Fletcher

as

Self

Marc Laidlaw

as

Self

Dario Casali

as

Self

Kelly Bailey

as

Self

Laura Dubuk

as

Self

Jay Stelly

as

Self

Jeff Lane

as

Self

David Speyrer

as

Self

Harry S. Robins

as

Self

Michael Shapiro

as

Self

Ted Backman

as

Self

Dhabih Eng

as

Self