
Henry Jackson, known as Little Dynamite, is a Golden Gloves champion, who agrees to turn professional when approached by fight manager Ed Watson, despite the opposition raised by his father and Fanny Singleton, his sweetheart.
Henry Armstrong
Henry Jackson
Willie Bryant
Frank Harrison
Mae E. Johnson
Jerry Jordan (as Mae Johnson)
Hamtree Harrington
'Windy' Butler

Canada Lee
Speedy Joe Williams (Henry's Trainer)
Lionel Monagas
Eddie 'Ed' Watson (Henry's Manager)

Francine Everett
Fanny Singleton

Dooley Wilson
Baron Skinner (as Arthur 'Dooley' Wilson)

Fighting Tommy Riley
Fighting Tommy Riley

Dempsey
Dempsey

The Flanagan Boy
The Flanagan Boy

Hell's Kitchen
Hell's Kitchen

The Harder They Fall
The Harder They Fall

Toboggan
Toboggan

Die Bubi Scholz Story
Die Bubi Scholz Story

Let's Do It Again
Let's Do It Again

The Crowd Roars
The Crowd Roars

Saturday Night
Saturday Night

Far and Away
Far and Away

Phantom Punch
Phantom Punch