Dancer

 was the inventor of Fresh Cut Grass.

Background
Dancer was an inventor of various automatons and other mechanical devices, which she often named for her favorite smells. Fresh Cut Grass was her most advanced creation.

Relationships
Fresh Cut Grass refers to Dancer not just as their creator, but consistently as a former associate. He was upset when his Coin of delving, which she had given to him before she died, was lost.