Why is there a guy shouting bonfire on wii sports resort?

In Wii Sports Resort, the character shouting "Bonfire!" is part of the game's vibrant atmosphere during the Fireworks show in the "Resort Island" setting. This enthusiastic shout is intended to enhance the festive and celebratory mood of the game, making it more immersive and enjoyable for players. The character adds a humorous touch, contributing to the lighthearted and playful environment that defines the Wii Sports series.