Pulse Wave 
Sprinkle Medley (“Medley”, not “Melody”, after G1 Medley due to their resemblance) and Spring Melody are both official and already imply each other. The former name was a case of Hasbro taking over the fan name Medley (they had learned their lesson after slapping the name “Heartstrings” onto Lyra back in 2011) and making it easily copyrightable. The latter name must have been a case of “Sprinkle Medley? What kind of name is that? Let’s give her a nicer name” and no knowledge of the origins of the former name at all.
April Showers, as far as I’ve understood, is not the same pony. She’s a similar pony down to the cutie mark, but slightly less saturated, and she has got a different (amber instead of green) eye colour. It was decided at some point that they’re two different ponies, and the fans gave the amber-eyed one a new name.
Whoever made the DVDs didn’t know the difference and used the name April Showers for the wrong pony. The wiki gets this wrong because they can’t be proven right. Because they cling to Wikipedia’s set of rules. Because fan pages such as Derpibooru are no reliable sources of information and may just as well not exist altogether. And because this mistake has never been mentioned by a non-brony on a non-fan site.
Busy procrastinating
sprinkle melody, spring melody and april showers should all be aliased, or at least the last two should imply the first.Personally I believe they should all be aliased into april showers as that’s my preference, since that was the first name I ever saw for her.Sprinkle Melody appears to be her official name, though, with the others being secondary.
Sprinkle Medley (“Medley”, not “Melody”, after G1 Medley due to their resemblance) and Spring Melody are both official and already imply each other. The former name was a case of Hasbro taking over the fan name Medley (they had learned their lesson after slapping the name “Heartstrings” onto Lyra back in 2011) and making it easily copyrightable. The latter name must have been a case of “Sprinkle Medley? What kind of name is that? Let’s give her a nicer name” and no knowledge of the origins of the former name at all.
April Showers, as far as I’ve understood, is not the same pony. She’s a similar pony down to the cutie mark, but slightly less saturated, and she has got a different (amber instead of green) eye colour. It was decided at some point that they’re two different ponies, and the fans gave the amber-eyed one a new name.
Whoever made the DVDs didn’t know the difference and used the name April Showers for the wrong pony. The wiki gets this wrong because they can’t be proven right. Because they cling to Wikipedia’s set of rules. Because fan pages such as Derpibooru are no reliable sources of information and may just as well not exist altogether. And because this mistake has never been mentioned by a non-brony on a non-fan site.
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