I'm surprised that nobody mentioned "Them!" in which he had a small role.
RoryR did mention it a number of posts up.
Yeah, and looking up his credits on IMDb.com I've found that he was a gas station attendant in MIGHTY JOE YOUNG. I'll have to look at my Blu-ray of that to see. And I'd forgotten that he was "Harry" in LONELY ARE THE BRAVE, the judge in HOUR OF THE GUN, and the dentist/doctor or whatever who takes care of Dutchy in WILL PENNY. That episode of "Gunsmoke" I saw him on the other day was the "Gypsum Hills Feud" from December 27, 1958.
He also played the Admiral on "Get Smart" though somewhat unrecognizable under that makeup.
He used that makeup for one of his appearances on The Wild Wild West as a rascally moneybags - also he got play one on our hero's substitute partners (and a villain!).
Schallert played a news broadcaster in the apocalyptic thriller INVASION, U.S.A. Alfred E. Green directed the 1952 film. Kritzerland released Albert Glasser's score in 2012.
Schallert played an Assistant Stage Manager in the 1953 version of THE JAZZ SINGER. Veteran director Michael Curtiz helmed the film. The RCA LP of the song score has only had a gray market CD release.
Schallert was a reporter in Don Siegel's 1954 prison picture RIOT IN CELL BLOCK 11. Herschel Burke Gilbert provided the unreleased score, with orchestrations by Joseph Mullendore.
Schallert was a dispatcher in the 1954 John Wayne classic THE HIGH AND THE MIGHTY. William A. Wellman directed this early disaster film. The score by Dimitri Tiomkin is still awaiting a legitimate CD release.
We just presented our 3-D restoration of GOG at the TCM Festival. Mr. Schallert had a brief but memorable role in the film. May he rest in peace.
In 1954's GOG, Schallert played "Engle," the assistant to "Dr. Zeitman," the designer of NOVAC, a giant "brain machine" computer. Herbert L. Strock directed the film. It was scored by Harry Sukman, with orchestrations by Henry Vars.
Schallert played another ambulance intern in the classic 1954 sci-fi film THEM!. Gordon Douglas directed. Monstrous Movie Music re-recorded 27 minutes of Bronislau Kaper's score in 1996.
Schallert was another gas station attendant in the 1954 crime drama DOWN 3 DARK STREETS. Arnold Laven directed this Broderick Crawford film. Paul Sawtell provided the unreleased score.
Schallert worked with director Don Siegel again in 1955's AN ANNAPOLIS STORY. Schallert played an instructor to "Tony Scott" (John Derek). Marlin Skiles composed the unreleased score.
In 1956's THE LONE RANGER, Schallert played "Mr Clive," the secretary to the governor (Charles Meredith). Stuart Heisler directed the western, which was scored by David Buttolph.
In William Wyler's FRIENDLY PERSUASION, Schallert played a young husband. Dimitri Tiomkin's score for the 1956 film was last released by Varese Sarabande in 1997.
Schallert played another reporter in the 1956 Douglas Sirk film WRITTEN ON THE WIND. Frank Skinner's score was issued on a Decca LP, but has only had a gray market CD release.
In the classic sci-fi film THE INCREDIBLE SHRINKING MAN, "Robert Scott Carey" (Grant Williams) goes to "Dr. Arthur Bramson" (William Schallert) to figure out why he is getting smaller. Jack Arnold directed the 1957 film. The Universal "tag team" score included music by Hans J. Salter and Herman Stein, among others. Ray Anthony did the trumpet solos in the score. Intrada released 18 minutes of Salter's music in 1994.
In 1957's BAND OF ANGELS, Schallert played a Union lieutenant. Raoul Walsh directed the Civil War drama. Max Steiner's score was last released on CD by RCA Spain.
