* Sach "Slip" Mahoney: Played by Leo Gorcey throughout the series. He was the boisterous, quick-witted, often trouble-making leader of the gang.
* "Huntz" Hall: Played by Huntz Hall throughout the series. He was the gang's more timid and less intelligent member, often providing comic relief and getting into hilarious predicaments.
Recurring Supporting Characters
* "Gabby" DeLeon: Played by Gabriel Dell in most of the films. He was the gang's wise-cracking, somewhat cowardly, but ultimately loyal friend.
* "Louie" Dumbrowski: Played by Bernard Gorcey, Leo's real-life brother, in several films. He was often a rival or comedic foil to the Bowery Boys.
* "Biff" Bailey: Played by Billy Benedict in several films. He was a more serious and sometimes antagonistic character who often clashed with the Bowery Boys.
Other Notable Characters:
* "Spike" Jones: Played by Maxie Rosenbloom in several films. He was a tough-talking, but often good-natured, character who sometimes got involved in the boys' escapades.
* "The Old Man": Played by David Gorcey, Leo's real-life father, in several films. He was a stern but generally supportive figure for the Bowery Boys.
While these were the main characters, there were many other actors who appeared in smaller roles, adding to the comedic ensemble. The Bowery Boys films were known for their fast-paced humor, physical comedy, and engaging storylines. They were a popular form of entertainment during their time, and continue to be enjoyed by fans today.