Oliver Humperdink had a few decent runs as a wrestler, but it was as a manager that he made his biggest impact.  Humperdink was very successful in Florida and was a long time heel manager there.  He did reach the WWE as a face manager of Bam Bam Bigelow and Paul Orndorff, but he was largely mute in that role and it was not an indication of his value on the ring apron.  His place in the Hall of Fame is better viewed if they look at what he did outside of the WWE as opposed to inside of it.