Azuyre, does the sword symbol mean increased strength?  I might try changing it to a fist since the attack option uses a fist, and the pokemon dont actually use swords.  Though if you cant make a readable fist at that size sword is probably the way to go since people easily recognize the meaning.

that looks good.  I made a small edit

I think the colored grass works great with Charizard who looks like he's causing ambient light. I suspect that water Pokémon that are not blue (e.g. Magicarp) will look less underwatery than say Tentacool who'd get a sea grass kinda feel. With a pure white abstract BG Magicarp looks less like a ...fish outta water.

The battle screen Pokémon are tiles. You can easily tell by setting up different BG and Sprite palettes. However, the splash/attack effects are sprites, and  also the very top of the backsprite during slide-in because it has to go over and across the enemy sprite.

I'd be tempted to use the extra unused font tiles for symbols like elements and attack types and stab and whatever, then throw those into the various strings.

Nice! Love that you managed to make a good looking GUI while keeping the pokeballs. It does looks a little thick though and would be nice with a bit larger margin for the text.

I tried something similar inspired by your design!



I added a lighter gray zeroes as fillers, makes it easier to see the actual numbers while still filling out the empty spots.
Not sure about the gui as it looks more bloated and goofy. But I was aiming for the target audience rather than my personal taste