This was a very early concept for the student game I am currently working on.
I was tasked to create a gigantic monster, which we called the Goliath, that would function as the main boss of our game. Initially, the monster was to be almost 20 stories tall in comparison to the player's character. So if the player was essentially the size of a fly, then the obvious route was to have the fly (or a mosquito in this case) be the giant being constantly annoyed by the human.
Learn more of our game at: https://actuallyagamecompany.weebly.com/dev-blog