Who's that Pokémon?! (Patreon)

Since one of my latest pieces was not yet set in stone, I figured I'd ask who you'd like to see!

In my most recent sketches upload, Braixen is paired with unidentified Pokémon off-screen. This has not yet been decided and will be used in a follow-up drawing, so, Who's That Pokémon?

I've listed a few suggestions below but feel free to comment your own, so long as it meets the colour criteria (black). ;U