The GoatMaster or GM, A piece that moves like a queen but the only squares it can move in is where another enemy piece is or the edge of the board. Upon contact, depending on the piece, it will either get captured or just be moved back 1 square.

The Russian: Play one move with the piece and it will take your opponents soul, make the opponent cry, make the opponent quit chess, make the opponent run as far away as he can and then you win on time.

there's no piece

NicBurgo, kills pieces with bad jokes

Donald Trump: Shouts fake news while keeping in power. If it gets attacked the other price dies. If it is attacked twice it dies. It can move 3 squares in any direction. It is worth 7 points

um, if it's supposed to mean something please explain

Minecraft creeper (creeper for short): Explodes on move twelve, destroying itself and all pieces around it, including your own. 

Gothamchess: For the cost of a move can promote a pawn to a minor piece

Eric Rosen: Can imobolize gothamchess for four turns twice per game

Btw all these ppl move like kings

Hikaru Nakamura: If boncloud is played then a random piece turns to queen

Gotham sub: When move can convert a random opponent's pawn into a potato, which is a pawn but can't take any pieces.

Random nerd: All pawns become potatoes when pushed.

Magnus carlsen: Build a tower on any square at the beginning of the game where, if any of your pieces are in the tower, those pieces cannot be attacked.

Bobby Fischer: Can use his fishing rod to draw a random opponent's piece to a square of choice

I'm in this picture and I don't like it.