Nightmare Moon, what is she? A mere evil entity that took advantage of Princess Luna or Luna's own darkness unchecked? Maybe a little of both. A shame that in Luna's emo self punishment and stoicism we didn't get see her explored more as I can think of different angles were Nightmare Moon could be interesting. Oh, imagine if they had introduced Kirins earlier.. 

 >>/7959/
A certain darkness has come indeed and a update of the pin message of the site is in need. 

PoLS,  from the anon who has a obsession with crossing bridges.