Son of actor Richard Daniels, nephew of actress Bebe Daniels.
The very first Hal Roach film in the series was shot in the spring of 1922 and released on November 5th. It was entitled simply "Our Gang" which told the story of widowed mother and store owner who was losing her customers due to the unethical methods of a nearby competitor. Mickey and the rest of the kids decide to stage a show for her with pet animals and its success leads to a resurgence of business once again. Sadly, no negatives or complete prints exist and is considered a lost film.
One of ten children, his actor father, Richard Daniels occasionally appeared with Mickey in the "Our Gang" shorts. They also appeared together in several of Harold Lloyd's features.
He appeared in 106 films from 1922 to 1946.