create the most stupid chess pieces!
The fly. Can move like a king. Doesn't take up space on the board. It cannot capture or be captured. When it moves onto the same space as another piece, that piece will be mildly inconvenienced on their next move and push the fly away in a random direction.
It also makes a really quiet, really irritating sound. *bzzzzzzzzzz*

If it captures it does because it’s too stupid to kill a piece
Yes, it does capture.

The Engine.
Each player starts with two Engines, beginning on a3, h3, a6, and h6.
It moves as a queen, but only up to two squares out.
When an engine is captured, the player gets to ask Stockfish for the Best Move on the next turn.
This will create some interesting strategies. Do you capture the opponent's Engines, or leave them on the board? Capturing them gives the opponent engine moves, but not capturing them will lead to nerfed Queens being left on the board.

Wererepost. It a piece tho but he when he gets capture that piece turn into a wolf and capture every piece in the chess

Power cold. Is a piece but powerful. When 1000000000000000000000 Queen attack that piece it blew breath cold every queen and attacked by used his colllllllllldddddddd power

The spinner : No matter if its your turn or not it always teleports somewhere within an Radius of 5 squares and if its near a piece it gets eliminated no matter if its your turn or not

The immortal snail it moves to the king and destroy every piece in its way. You can use your turn to turn the snail to the other King
Hungry Hungry Hippo. Captures one square forward. Cannot move without capturing.