and Darth Momin who also all wore helmets/masks. So, why didn’t Palpatine get one? While that question has never been answered, one thing is for sure: the Jedi should be thankful he didn’t.
The Stranger's helmet is made from cortosis, which is effective against lightsabers and Jedi focus. Currently, the Sith is being called The Stranger following the merchandise reveal of the helmet.