I came up with Endoperez when I was young, foolsih, and wanted to make a RuneScape character that wasn't stupid Killer1875X. I have since encountered realized e.g. that Perez is a very common name elsewhere... And that "endo pereas" in latin means "in-, inside-" and "you die". 

Some time ago I realized going with my real name would be better, but Endoperez is the virtual persona I have used for years, and so I can't go around changing it... And if I want to be recognized in other forums I join, I have to use the same name!