Originally credited "Charles Sultan ?", but the face with broad jaw and squinting eyes are typical of other credited work by Ricca, like Jim Dolan in "Slam Bang Comics" #2.
Especially the face in close up on the last page is a sure signs of Hart, a bit heavy nose with black shade, like his K-9 story in "Dynamic Comics" #3. Also the movement in fistfights.
The faces with round eyes, and the very exited movements, is probably Madden, who is credited on this feature by Jerry Bails' Who's Who.