Apparently there is not much difference in the shape of the king and queen slime sprites, and they are easy to make once you have the base.
However, the problem lies in the color of the queen slime and the crowns of the king and queen. I actually made this boss before, but the node limit was holding me back.
And the finished product disappeared along with the smartphone.

And the size of the boss slime was bigger than I expected. If you don’t do anything, a single slime will fill the camera’s field of view.