" we don't exactly always have the full stories of why characters have their names."What I've noticed is that a lot of show's episode titles are in reference to some major cultural event. Filly Vanilli, for example, is in reference to the rock duo MILLI Vanilli who, back in the late 80s, were discovered to be just a couple of good looking lip syncing guys. The REAL singers of the songs were probably ugly as f*ck with no eye catching appeal whatsoever.Sleepless In Ponyville is in reference to the movie Sleepless in SEATTLE starring(I think) Tom Hanks.As far as characters go: Applejack is not only a revamp of an original G1 character, but has the same colour scheme as the actual cereal.Princess Celestia could very well be like The Pope in the Equestrian multiverse, while Princess Luna would be the exact opposite(though it doesn't suggest that she represents LuciferAnd "Celestia" is Latin for "sky"(I think); while "Luna" is Latin for "moon"."The same thing happened to Derpy when her original voice ended up giving a negitive impression that she was a steriotype to the mentally ill, not helping that she had a dumbbed down voice."Personally, I LIKED the original voice. I thought it made her sound kinda funny.But I know there was a huge public outcry from social groups fighting for the rights of mentally challenged people NOT to be ridiculed which forced Hasbro to redo her voice. They didn't make her any less CLUMSY, though.