Out of all of the games, the pages in this category are heroes. “Knuckle Joe is a tough opponent fighting with his best shots, like Vulcan Jab and Smash Punch... Knuckle Joe(UMSSF) Knuckle Joe Pages in category "Heroes" The following 2 pages are in this category, out of 2 total. K Knuckle JoeKnuckle Joe(UMSSF) Retrieved from "http://umss.wikia.com/wiki/Category:Heroes?oldid=4017" Ad blocker interference detected! Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.