Piece Suggestion fallen soldier

An idea I have for a fairy piece is what I would call the fallen soldier because it wouldn't be able to move.  I think this type of piece would probably have negative value given that it could not checkmate or capture and would impede the movement of friendly pieces more than the movement of enemy pieces.

There's Brick and Duck, and Transparent Brick

@CDREDI4I Yes, but they're all neutral.  My suggestion is for an immovable piece that belongs to one particular army and so could be captured by enemy pieces.  For instance in FFA a red fallen soldier could be captured by green piece but not another red piece.

What use would this piece have though?

i think it is unusable

do they have some sty?

One use of fallen soldiers would be to make positions, in which the royal pieces are trapped in a wall of its own pieces, but the enemy pieces can bust through the walls whenever its convenient.

For instance in this position, with the pieces that look like dead people holding swords being fallen soldiers, each royal king is trapped in a 3 by 3 box surrounded by a wall of its own pieces, but non royal kings are sufficient material to checkmate an enemy king as they can break through the walls, by capturing fallen soldiers, shortly before delivering checkmate.

A lone king is still insufficient, as it can be captured whenever it gives check.

@Eragon04 not sure where you're getting the idea that I was referring to checkmate with a lone king when I said kings

I'm referring to a checkmate position like this one.

There is duck, go to ustom variants and edit board, there is a duck