John St. Polis

Crossroads

Professor (uncredited)

Haunted House

Simkins

On the Spot

Doc Hunter

Rocky Mountain Rangers

Joseph Manners

Abe Lincoln in Illinois

Minor Role (uncredited)

They Shall Have Music

Davis

Boys' Reformatory

Superintendent Keene

Mr. Wong, Detective

Carl Roemer

The Mysterious Rider

Townsman

Phantom Ranger

Pat Doyle

International Crime

Roger Morton

Saleslady

Crane

The Shadow Strikes

Caleb Delthern

Jungle Menace

Chandler Elliott

Paradise Isle

Coxon

Borderland

Doctor

Below the Deadline

Mr. Abrams

Three on the Trail

Sheriff Sam Corwin

Call of the Prairie

Jim

The Dark Hour

Dr. Munro

A Night at the Opera

Opera Conductor (uncredited)

The Lady in Scarlet

Jerome T. Shelby

Death from a Distance

Prof. Trowbridge

The President Vanishes

Attorney General Davis (uncredited)

Guilty Parents

Defense attorney

Notorious But Nice

John J. Martin

Cocktail Hour

French Police Investigator (uncredited)

King of the Arena

Governor

The World Gone Mad

Grover Cromwell

Terror Trail

Colonel Charles Ormsby

The Match King

Banker (uncredited)

Call Her Savage

Doctor Consoling Nasa (Uncredited)

The Gambling Sex

John Tracy

If I Had a Million

Glidden Associate (uncredited)

False Faces

Dr. McDonald

The Crusader

Robert Henley

Symphony of Six Million

Dr. Schifflen

Lena Rivers

John Nichols

Alias the Doctor

Dr. Niergardt

Heartbreak

U.S. Ambassador

The Yellow Ticket

Passport Official at Airport

The Gay Diplomat

General

Their Mad Moment

Hotel Manager

Transgression

Serafin, Arturo's Butler

Men of the Sky

Madeleine's Father

Doctors' Wives

Dr. Mark Wyndram

Beau Ideal

Judge Advocate (as John M. St. Polis)

The Criminal Code

Dr. Rinewulf

Captain Thunder

Pedro

Kismet

The Imam Mahmud

A Devil with Women

Don Diego

The Bad One

Judge

The Three Sisters

Judge

Guilty?

Polk

In the Next Room

Philip Vantine

The Melody Man

Von Kemper

Party Girl

John Rountree

Fast Life

Andrew Stratton

Coquette

Dr. John M. Besant

Why Be Good?

Pa Kelly

Marriage by Contract

Father

The Power of Silence

Defense Attorney

A Woman's Way

Mouvet

The Unknown

Surgeon (uncredited)

Too Many Crooks

Erastus Mason

The Lily

Comte de Maigny

The Greater Glory

Prof. Leopold Eberhardt (as John Sainpolis)

The Far Cry

Count Filippo Sturani

Paint and Powder

Mark Kelsey (as John Sainpolis)

My Lady's Lips

Inspector

The Phantom of the Opera

Comte Philip de Chagny

The Dixie Handicap

Dexter

Folly of Vanity

Ridgeway (modern sequence)

The Rose of Paris

André du Vallois

In Every Woman's Life

Dr. Philip Logan

The Alaskan

Rossland (as John Sainpolis)

Those Who Dance

Monahan

Mademoiselle Midnight

Colonel de Gontran (Prologue)

Three Weeks

The King

Held to Answer

Hiram Burbeck

Woman-Proof

Milo Bleech (as John Sainpolis)

A Prince of a King

Mario

The Social Code

Defense Attorney

The Untameable

Dr. Copin

Three Wise Fools

John Crawshay

Souls for Sale

Self - Celebrity Actor in Commissary

The Hero

Andrew Lane

Shadows

Nate Snow

Cappy Ricks

Skinner (as John Sainpolis)

The Four Horsemen of the Apocalypse

Etienne Laurier

The Great Lover

Jean Paurel

Old Dad

Jeffrey Bretton

Stake Uncle Sam to Play Your Hand

Kaiser

Laughing Bill Hyde

Black Jack Burg

All Woman

Sam Tupper

The Mark of Cain

Judge Hoyt

The Public Defender

David Moulton

The Love That Lives

Harvey Brooks

The Mystic Hour

Clavering

Sleeping Fires

Edwin Bryce

Sapho

Dejoie

The Fortunes of Fifi

Duvernet

The World Against Him

Dr. Hamilton Welsh

The Social Highwayman

Hanby

The Yellow Passport

Fedia

The Salamander

Albert Sassoon

Bondwomen

Dr. Hugh Ellis

Wormwood

Joseph and His Coat of Many Colors

Soldiers of Fortune

Pres. Alvarez