A crossover involving He-Man 2002 animated series and the 2011 Thundercats series (what do they have in common? They both got cancelled!) On a more serious note it's a crossover still in the works and am currently working on a fifth chapter, but if your interested in having a look at the story then by all means do so.
http://www.fanfiction.net/s/8390946/1/Second-Legacy (http://www.fanfiction.net/s/8390946/1/Second-Legacy)