What is the comparative and superlative of versatile?

There is no commonly accepted comparative or superlative form of "versatile".

While you could technically use "more versatile" and "most versatile", it's not considered grammatically incorrect, it sounds a bit awkward and is not the preferred way to express the idea.

Here are some better alternatives:

Comparative:

* More adaptable

* More flexible

* More multi-faceted

* More resourceful

* More all-around

Superlative:

* Most adaptable

* Most flexible

* Most multi-faceted

* Most resourceful

* Most all-around

Choose the option that best fits the specific context you're writing in.