This is basically just an alternate version of Firefox (or Blaze N. Foxx as I've been calling her nowadays ( https://www.furaffinity.net/view/45378585/ for reference, here's a link to Firefox's reference)) that's a Shiny Mew that dresses in orange pyromancer robes and has both Braixen and cat-like features. Both characters are pretty much pyromaniacs with fire themed nicknames... Although the only theming is Braixen being called Firefox and Mew being called Firecat. Part of Blaze's boot design was actually inspired by the boots Blaze the Cat has from the Sonic the Hedgehog series.

As a bonus note, Sneaker (or at least a version of said 4th wall breaking Umbreon jester) taught this version of Blaze how to use comically large hammers.