 King of the Sierras1938 · Diablo | Diablo |
 Robinson Crusoe of Clipper Island1936 · Rex, the Wonder Horse | Rex, the Wonder Horse |
 Stormy1935 · Rex (as Rex King of Wild Horses) | Rex (as Rex King of Wild Horses) |
 The Adventures of Rex and Rinty1935 · Rex, The King of Wild Horses | Rex, The King of Wild Horses |
 The Law of the Wild1934 · Rex King of the Wild Horses | Rex King of the Wild Horses |
 King of the Wild Horses1933 · Rex (as Rex the Wonder Horse) | Rex (as Rex the Wonder Horse) |
 The Vanishing Legion1931 · Rex | Rex |
 Parade of the West1930 · Mankiller (as Rex King of the Wild Horses) | Mankiller (as Rex King of the Wild Horses) |
 The Harvest of Hate1929 · Rex, the World's Greatest Horse (as Rex the Wonder Horse) | Rex, the World's Greatest Horse (as Rex the Wonder Horse) |
 Hoofbeats of Vengeance1929 · Rex, the Wonder Horse | Rex, the Wonder Horse |
 Plunging Hoofs1929 · Rex (as Rex the Wonder Horse) | Rex (as Rex the Wonder Horse) |
 Wild Blood1929 · Rex, Mary's Horse (as Rex the Wonder Horse) | Rex, Mary's Horse (as Rex the Wonder Horse) |
 Two Outlaws1928 · Rex, a Horse (as Rex King of the Wild Horses) | Rex, a Horse (as Rex King of the Wild Horses) |
 Guardians of the Wild1928 · Rex - a Wild Horse (as Rex the Wonder Horse) | Rex - a Wild Horse (as Rex the Wonder Horse) |
 Wild Beauty1927 · Thunderhoof, a horse | Thunderhoof, a horse |
 No Man's Law1927 · Rex, a Wild Horse (as Rex the Wonder Horse) | Rex, a Wild Horse (as Rex the Wonder Horse) |
 Rex the Devil Horse1926 · The Devil Horse (as Rex - King of Horses) | The Devil Horse (as Rex - King of Horses) |
 The Black Cyclone1925 · Rex (as Rex the Wild Horse) | Rex (as Rex the Wild Horse) |
 Lightning Romance1924 · A Horse (as Rex the Wonder Horse) | A Horse (as Rex the Wonder Horse) |
 The King of the Wild Horses1924 · The Black (as Rex the Wonder Horse) | The Black (as Rex the Wonder Horse) |
