Well then. This would take a while to gather and write the entry. Any suggestions? All I can think of is reviewing the layouts of some entries for other memetic tools and software.
I noticed that another related thread was already created, but it’s been locked for around a year.
The oldest M.U.G.E.N video I found is probably this, which was uploaded on December 22, 2005.
If you mean “well-known”, then yes. Kung-Fu Man is the most popular, due to not only coming with M.U.G.E.N, but for also being modified into several different versions of himself, as well as being used to create completely-different characters, which some of them contain some of Kung-Fu Man’s files.
Besides Kung-Fu Man, perhaps the most well-known original creation is Reuben Kee’s Dragon Claw, due to its charismatic 3D-rendered graphics. It became more popular when its author Reuben Kee died on November 23, 2007 as the result of a boating accident that claimed the lives of several contestants, including four of his teammates, in the 2007 Cambodia Tonle Sap competition. Other well-known original creations by other authors include characters by Aiduzza and Lord Ravenous by EXInferus.