How Many Grey Jedi Are There?

14 Gray Jedi in the Star Wars Universe.

Who was the first Grey Jedi?

The Jedi Padawan Jolee Bindo fought for the Galactic Republic in the Great Sith War against the Sith Lord Exar Kun, who sought to establish a new Golden Age of the Sith. After the war ended in 3996 BBY, Bindo abandoned the Jedi Order and became a Gray Jedi.

Are there any Grey Jedi?

There are no Gray Jedi in Canon right now. Balance is a tricky subject, but it is confirmed that using both the and the does not give one balance.