Curly Joe?
(Yeah, strange to chat about this movie almost 50 years later. Why? No big reason.)
There was one minor actor -- seemed like a bad guy (haven't finished watching, yet), with a mean scowl -- who looked like Curly Joe.
I mostly watched the Three Stooges in the early 70s, being in the single digits of age, so that's a far way to go for memory. Moreover, Curly Joe was a later replacement -- being in few episodes that I saw.
I tried to find the actor's name & such to see if he was whom I thought, but not enough info (no pic) provided to easily check. Anybody know? Or noticed a resemblance?