Notes:

The Queen have many variations inside the game that are accessed through cards.
.
-Genderqueer: A Bishop that turns into a Queen.
-King's Mistress: A Queen that moves up to 3 squares in her normal pattern.
-Succubus: A Queen that comes with an extra Soul slot (for the player to use). While the Queen doesn't receive any changes in behaviour, her card pictures a change in her piece design (which isn't used).
-Iron Maiden: The nearly invincible Queen, the most dangerous piece in the game.