Rival crime boss who orders the assassination of Shep Morrison. After his henchmen are locked in a basement, he assumes they are dead, leading to a gangland cease-fire that divides their criminal territories.
Harry 'Silky' Fellowsby is a gangster who enters the hospital as a patient to create an alibi for a planned bank robbery. Mistaking Tubby and Flash for Detroit hitmen, he sends them to guard the bank entrance. He later retreats to a ski resort, where their efforts help expose and capture his gang.
Police associate assisting in the chaotic Invisible Man investigation.
Jumbo Schneider is a New York bookie who gives Herman Nelson a harsh choice: face deadly punishment or help fix a horse race in Maryland. He is the force behind the criminal scheme, and his mobsters interfere with the English jockey, ultimately pushing Virgil Yokum into the race.
J. Edgar Hoover is the FBI director who takes a personal interest in the Brink's robbery after the crime becomes a national embarrassment. He creates a temporary FBI office in Boston to pursue Tony Pino and the gang, linking the local investigation to the highest level of federal law enforcement.
Felix Bender is a gambler whose dispute with Steve Maddux ends in his death. Although he appears only as the victim at the center of the investigation, what happened to Felix brings Don Corwin and Bill Fellows together as they examine the circumstances and the criminal trouble connected to Steve.
Blackie is a jealous crook who loves Lorena and resents her interest in Johnny. Johnny later discovers that Blackie murdered his partner. Blackie takes Johnny and Lorena's little girl hostage, but Johnny kills him and rescues her.
A seasoned gambler who invites mobster Big Jule to the game and whose offhand remark about Big Jule's lack of soul inadvertently inspires Sky's final wager.
A powerful Chicago underworld boss known as Mr. Big. He is negotiating a territorial agreement with Dave, initially offering fifty thousand dollars for control of New York operations. Dave successfully counters with a hundred thousand dollar demand. Darcey ultimately accepts the higher amount, concluding his business dealings with Dave just as the gangster decides to leave the criminal life.
Nightclub owner and old friend of Lanyard in wartime Egypt.
A detective shadowing Frank's every move. He investigates the suspected murder that Frank cannot remember and arrives at the mansion to tie up loose ends.
Ogane is a French-allied Huron who disguises himself as a Mohawk and helps murder Tom Cutler while posing as a British scout. He carries information from the Fort to Montcalm, leads a Huron night attack, and kidnaps Marion. Hawkeye pursues and kills him in single combat.
Sheldon Leonard has 101 screen credits in a career dating back to 1934. Their work spans 7 cinematic universes — most prominently The Bowery Boys Collection with 2 titles. Signature works include Sock a Doodle Do, Sheldon Leonard's Wonderful Life, A Peck o' Trouble. Explore the interactive character relationship maps on each title page to trace how their roles connect across franchises.
Universe traveler — spans 7 universes
Related entry on Wikidata (Q1545340), public domain (CC0).