Starting back when I was a kid, one of my absolute favorite movie series has always been the Bowery Boys. In fact, the first book I ever attempted to write was about the Bowery Boys series but I abandoned it when another such book came out!
Broadway's Dead End Kids traveled to Hollywood and later became, in various combinations, the East Side Kids, the Little Tough Guys, the Junior G Men and finally, The Bowery Boys.
Over the course of the various series, the team of Leo Gorcey and Huntz Hall coalesced into a funny comedy team!
Thus it was a blow to the series when Gorcey quit after the death of his father. Stanley Clements was brought in to fill the contract for 3 more films, with Huntz Hall's name now being placed above the title.
Clements, although a more traditional "tough guy" than Gorcey, proved popular enough that 4 additional entries were ordered, with "Huntz Hall and the Bowery Boys" lasting a total of seven films.