“Hadn’t I not chosen your name, you wouldn’t be where you are today”- Snoke to Shawn Mendes via a Force vision
Snoke was the clone of an ancient mysterious extragalactic Force-sensitive being engineered by Darth Sidious. His original self is estimated to have lived for ten thousand years or more, witnessing the rise and fall of both the old Sith Empires and the Galactic Republic.
Sidious himself far in the Unknown Regions from the prying eyes of the Galaxy and who was known only to Sidious and possibly Vader, as well as the resurrected General Grievous and Asajj Ventress. After discovering Maul on Dathomir in 11BBY, Snoke tasked his new apprentice with tracking down Ventress and resurrecting General Grievous for his vision of a galaxy without the Jedi or the Sith whom Maul despised greatly.
While Maul was the public leader of the Confederacy he took his orders from Snoke who was unknown to the rest of the state.
Powers and Abilities
Snoke was strong with the dark side and was able to send opponents flying with a slight wave of his finger. He was also capable of using Force lightning and telepathy as well as telekinetically attacking someone from light years away. His power in the Force has been felt only by Darth Sidious who has sent probing teams into Unknown space to find Snoke. He also learned the of resurrecting dead beings from the Sith Lord Darth Plagueis sometime before the latter found Sheev Palpatine on Naboo