Hello, would you like to ask what the name of the three-letter monster in the board game is? The name of the three-letter monster in the board game is Half-Fish Beast. Half-Fishmon is a common monster card in the board game "Yu-Gi-Oh". The user in Yu-Gi-Oh is Yuta Kajiki. The card type is a normal monster. The effect is that it can attack quickly like a beast on land and like a fish in the sea. Therefore, the name of the three-letter monster in the board game is Half-Fish Beast.