Hairo Hairo no Mi

The Hairo Hairo no Mi is a Paramecia Devil Fruit that allows the user to generate and manipulate 'grey goo'.

Strengths
It allows the user to generate and manipulate grey goo from their body. Grey goo is a mysterious substance that has the odd characteristic of transforming anything it makes physical contact with into more of itself, allowing it to spread incredibly rapidly.

Weaknesses
The user suffers from standard Devil Fruit weaknesses. Also, those with Haki can successfully block the grey goo's effects, as coating a item or themselves with Haki prevents the substance from touching them, and thus, the substance can not convert them.