Hi there! I've never heard of the BJD community before, so forgive if I don't have all the facts right.
I've been fantasizing about having a little posable dragon figure since I was little and fell in love with the "darkhorn" (I think?) model I stumbled across many years back. But I think the creator/designer must have changed names or stopped creating unfortunately, cuz trying to find anything only turns up dead-ends or stuff from back in like, 2017. It doesn't seem like dragons are very popular creations either, for how little google can turn up. But I saw it looked like you might've gotten a new Cuarto dragon in 2022. I was hoping I could ask where/how you got it, if that's okay? Thank you for sparing me a little time :)
Hey there! Yes, cuarto unfortunately vanished within the last year. Her instagram handle is @_cuarto, by the way :) She had a website called cuartodolls up until mid 2022, but either she deleted it, or it got removed in the whole 'no business with russians' purge thing.
I got my Antares (the very big, last dragon she made) at the end of 2021 directly from her. I got a green Darkhorn secondhand from a local collector in 2022, who was selling her collection to take in refugees.
So - no, its not possible at this time to get dolls from cuarto :/ They might pop up secondhand, but they're rare.
If you're looking for dragon dolls in general, keep your eye on Dreamvalley! They sell through Legenddoll and Alicecollection. They recently announced a new one thats coming soon!
And a bit of self promotion - I've made my own little dragon, Eryn, whos preorder will start soon too :) My sculpting account is @quadrigadolls