One of the reasons Universal reigned supreme with horror was that while the larger majors all wanted a piece of that sweet horror box office, they were clearly embarrassed to be making such fare. Hell, even in the ’50s Jack Warner went out of his way to attempt to sabotage Them!, which despite his efforts–or arguably because of them–went on to become Warner Bros. top box office attraction that year.
Anyway, whether it was sniffiness by the majors or a lack of money by the skid row studios, most of the competitors fielded some pretty rudimentary, not to mention economical, man-monsters. Here’s an extreme example, with a burly guy proving in the end to be a rather tepid monster.
UPDATE: As noted by you guys, the above picture actually features the ‘monster’ being attacked by Mike Mazurki. Who to be fair to me looks more threatening than the film’s putative monster. Here’s that fellow below, looking especially terrifying in his suspenders.