Just came to drop by again.
I took some thought with my original speculation about Litten hopefully being a Fire/Rock
Pokémon, but after seeing comments about the alchemy symbol also referring to Brimstone, as in its hellish representations, I'm starting to feel alright with a possible Fire/Dark
type as many people speculate. I came to this conclusion because I remembered that tigers in nature are natural ambush predators, which can fit pretty good with the Dark type symbolism. Furthermore, Tigers, if Litten becomes one at all, are also solitary by nature, which goes well with Litten's personality of not showing its emotions. Adding to this, they're lone hunters and are thought to hunt the most during the night, again a reference to the Dark-type. Combined with the common brimstone associations to hell, as well the reference to the volcanic substance of the same name, I can imagine a Fire/Dark
type evo in the vein of being a black volcanic tiger whose black fur could reference to obsidian - black glass made of cooled hardened lava/magma.
In short, I have realized that if Litten ends up evolving into a Fire/Dark
type, it can still keep its volcanic theme without being a obvious Fire/Rock
type. After all, in most fiction, Hell often gets pictured with volcanoes as well. With that said, consider me a supporter for the Fire/Dark
type too, but this doesn't mean I'm straying off my original speculation of Fire/Rock.
In other words, I will be cool with either Fire/Rock or Fire/Dark.
Here's a example of what a Fire/Dark type evo for Litten could be in the volcanic theme, if it becomes a tiger that is.
View attachment 15524