as said in the title and short description, this is a theme made to look like the screen in Sonic Battle where you can customize Emerl's moveset! (with the folders made to resemble the move cards, as well)
all sprites (aside from Emerl himself) are taken from the Spriter's Resource, albeit altered to be upscaled to a 3ds resolution (or in the case of the folder icon, completely rearranged?!). the actual art of Emerl is his proper character art rather than the sprite version of it because the sprite was too small, which i got off the Sonic Wiki. all the pixel art sprites is 1:1.

(i actually attempted to upload this twice before, but the first time it was completely busted and the second time the music didn't loop so i deleted it both times and got too embarrassed to upload it again for several days... haaaah... but it should work completely now, as it does on my o3ds! and if it doesn't, well, AAAAAA!!!!!)

Emerl Configuration - Sonic Battle