I don’t know what I find more interesting, the comments regarding the characters’ histories or the fact that I might want to change my twin headcanon for these two for a possible triplet one.

…wait, all the changelings are the same. *facehoofs at self*

@Ferrotter  
OHHHHHH, so THAT’S why the Canternet vhost offer list has @incidental.unicorn.$account in it!  
Do they also use Circumstantial Pegasus and Generic Earth Pony? :3  
And maybe Changeling Swarmer?

@Ferrotter  
and now I wonder what Cloudchaser would have looked like, had Stormwalker stayed in

@Background Pony #995F  
Oh, I should add, that explanation is correct for why Lyra also gets tagged with Heartstrings and Lyra Heartstrings. The original blind bag toy of her was named Heartstrings. Although the MLP:FiM character had long since carried the fanon name Lyra, Hasbro couldn’t trademark that name. Being an actual name, a constellation in the sky, and the name of several other characters (including Lyra Belacqua from “The Golden Compass” movie that came out around the same time as the blind bag toy), anyone could use the Lyra name for anything, including mint-green pony toys. To deter bootlegging, (and possibly, their toy naming staff didn’t even know she was already named Lyra by the fans; her animation files are named “incidental unicorn #2” because unlike Cloudchaser/Stormwalker she was originally intended just to be background filler with no name or speaking roles) Hasbro invented a new name for her as a toy. That upset many fans. In a way, it was a very amusing example of a corporation doing something for a real reason, but a reason that kind of destroys the entire reason for doing it in the first place. Like in the early days of laptop computers, when companies would buy all their field sales staff laptops at a cost of thousands of dollars a unit more than desktops, because that way they could be productive while traveling to visit clients; and then their loss prevention staff chained the laptops to their desks because they were too expensive to risk in the field. The whole point of making a blind bag toy of Lyra was because Lyra was one of the most popular background characters with the fans who named her Lyra. Even more amusing, they also changed the un-trademark-able fanon name of Berry Punch to Berryshine (and made her a unicorn because they needed to get more use out of the Rarity mould) and renamed the 100% show-canon (though also un-trademark-able because it’s an actual girls’ name) Trixie to Lulamoon.
 
It probably would’ve blown over with the pretty obvious explanation that Hasbro almost couldn’t name the toy Lyra. And Nayuki’s and Lauren’s explanation that the show staff just called her Incidental Unicorn #2 if they called her anything at all, and that they felt the toys were sort of an alternate universe to the show itself because of all the non-canon things Hasbro had to do to make them manufacturable and saleable (not so much to fans and kids, as to the toy buyers for major chain stores), such as making Celestia bright pink. And a very reasonable fan suggestion that people just call her Lyra Heartstrings. But then the upset was made worse by some ass-kissing editor of the MLP:FiM wiki pages who actually went through all their pages, and deleted all references to the name Lyra. Not just changed her name to Heartstrings, but deleted and banned all references to her having previously had the fanon name Lyra. As if obsequiously kowtowing to the “official” toy name would somehow convince the CEO of Hasbro to give him a **** job or something.
 
Hasbro, to their credit, realized their mistake and (being still just as unable to trademark the names Lyra or Trixie) gave them full names of Lyra Heartstrings and Trixie Lulamoon in the next toy release, which they could trademark. Including not just revised blind bag cards, but also new releases for both in the “Playful Ponies” size brushable toys.

@Background Pony #995F  
Close, but not exactly. There is no toy of her. However, she was called Stormwalker in the series guidebook, The Elements of Harmony. And the game card for Cloudchaser makes fun of it, quoting her saying she wished she was named Stormwalker. I forget whether it was Sibsy or Nayuki who explained why.
 
Basically, in the original script for “Hurricane Fluttershy” there were a bunch of new background pegasi, including Rumble, Thunderlane, Roid Rage/Snowflake/Bulk Biceps, Cloudchaser, Flitter, …and Stormwalker. However, all of Stormwalker’s scenes were cut before they were even animated because the episode was running too long. At the time Stormwalker’s role was cut out of existence, the character designers had already created all the Flash animation files for the Stormwalker character, but they hadn’t yet even started on Cloudchaser’s Flash files. So rather than let all work already done on the Stormwalker files go to waste, they just used those finished designs for Cloudchaser instead. But they never re-named the many thousands of files themselves, so the design still carries the Stormwalker name in DHX’s animation computers, even though the character is 100% canonically named Cloudchaser in the show, and there is no pegasus named Stormwalker in the show. All the animators know if they or the storyboard artists want to put Cloudchaser in a scene, they need to use the Stormwalker files. But the folks who wrote and illustrated the book didn’t know that, and when they used a picture named Stormwalker from the animation files, they captioned it with the character name from the animation files like they did with all the other pictures.
 
Sibsy or Nayuki never said so, but that’s probably also why she has a glitchy cutie mark that occasionally changes to a cloud and sun instead of the shooting star. Given that she’s the same color, parts of her were probably direct copies of the already existing Cloud Kicker files. The Stormwalker files probably weren’t actually 100% complete being debugged when Stormwalker was cut from the episode and work stopped on them. At this point, going back to find the tiny hoof-ful of specific poses that still have the cloud and sun, out of many thousands of specific poses of specific body parts, just wasn’t worth the effort. Plus since they didn’t catch it until the first episode featuring Cloudchaser aired, it’s sort of a semi-canonical in-joke now anyway. Sort of a mini-Derpy, fans can play “catch when Cloudchaser’s cutie mark changes.”

@Blacklight Shining  
Some insist on calling her Stormwalker because her toy is called “Stormwalker”.
 
Pedantic fellas….

@Gizoid101  
Whoever that mare is, she looks like Flitter as much as Cloudchaser does.

…wait…is Stormwalker just another name for Cloudchaser? I thought Stormwalker was the mare in the middle, there. 6_9

@Blacklight Shining  
What? Why?

Oh no.  
Did that just break all the Flitter+Cloudchaser fanon? D:

Looks Like another adorable group sister/cousin/clone hug.