David Harbour

as Jimmy Galante

as John

as Self

as Matt Wolfe(1 ep)

as Alexei Shostakov

as Major Trautman

as Alexei Shostakov

as Santa Claus

as Floyd Smernitch(7 eps)

as Archie Everhardt (voice)

as Self (uncredited)

as Alexei Shostakov / Red Guardian (voice)(4 eps)

as Alexei Shostakov

as Self - 'Stranger Things' Jim Hopper

as Gunny Lefferty

as Dan (voice)

as Frankenstein (voice)(7 eps)

as Jack Salter

as Ernest

as Santa

as Self - Narrator (voice)(1 ep)

as Buck (voice)(10 eps)

as Alexei Shostakov (voice)(1 ep)

as Alexei Shostakov / Red Guardian (voice)(1 ep)

as Alexei

as Matt Wertz

as Self(1 ep)

as Gaspar

as Father Turtle (voice)

as Self

as David Harbour III / David Harbour Jr. / Frankenstein

as Hellboy / Anung Un Rama

as Ronnie

as Self(2 eps)

as Doug Dennison

as Vic(6 eps)

as Dexter Tolliver

as Jim Hopper(42 eps)

as Hawk (voice)(1 ep)

as John Morris

as Self(1 ep)

as Self - Guest(1 ep)

as Self(1 ep)

as David Patrick(13 eps)

as Masters

as Ray

as Reed Akley(10 eps)

as Todd

as Self(1 ep)

as Self - Guest(2 eps)

as Self(1 ep)

as David Potter(13 eps)

as Gordon Shanklin

as Vietnam Memorial Head(1 ep)

as Jay Price

as Stephen Green

as Robert Dalton(2 eps)

as Dr. Mason Baldwin(1 ep)

as Van Hauser

as Joel

as Elliot Hirsch(10 eps)

as Cooper(3 eps)

as Bob Egan

as Dr. Sloan

as Ernest

as Frank Scanlon

as Brian

as Dan Samuels(1 ep)

as PointCorp Insider

as Frank Ambrose(1 ep)

as Shep Campbell

as Gregg Beam

as Dracula

as Mulligan

as David

as Self - Guest(1 ep)

as Gary Weber(1 ep)

as Randall Malone

as Agent Jim McAllister

as Dock Worker

as Robert Kinsey

as Self - Guest(2 eps)

as Christopher Clark(1 ep)

as Paul Devildis(1 ep)

as Wesley John Kanderson(1 ep)

as Moses John Jackson

as Terry Jessup(1 ep)

as Self - Guest(1 ep)

as Mike(1 ep)

as Jay Carlin(1 ep)

as Fred Kranepool (voice)(1 ep)

as Self - Clue Presenter(1 ep)

as Self - Host(1 ep)

as Self(1 ep)