You could try Enterbay's new 1/6 RM-4 Body. It's a bit taller than a HT figure so that might make Mort more menacing hight wise.

http://www.onesixthwarriors.com/forum/sixth-scale-action-figure-news-reviews-discussion/621583-enterbay-1-6-rm-4-body.html

Every other entry I make on the map doesn't go through. It says that I entered and I can review the entry but the marker doesn't show up. Oh well.