I recently found someone that makes decent mlp clay figurines, so I wanna have a chess set made like the pokemon one I had made, but I'm having trouble picking some characters for the pieces, here's what I have so far:

Shining Armor/Cadance and King Sombra/queen chrysalis --- King and Queen

Applejack/Pinkie Pie --- rooks

Rainbow Dash/Fluttershy and Discord/Tirek --- knights

Twilight Sparkle/Rarity and Nightmare Moon/Starlight Glimmer --- bishops

Castle guards/Changlings ---- pawns

As you can see, I need two villains for rooks, and if anyone would suggest any changes I'll listen to those as well, please help me and thank you in advance