His horse, in less than a third of his starring westerns, was named Rusty. Besides riding Rusty, in a minority of his starring westerns, he rode 5 different (rental) horses including a pinto and two different white horses, one of which was Jack Perrin's horse named "Starlight." Tom Keene also rode Rusty in some of his 1940s westerns at Monogram. The movies in which either man rode Rusty were the ones that Robert Tansey produced. So it was Tansey's horse, and not Randall's.