Snoke in his physical form
Snoke origins date back to the creation of all forces dark and light. He guided all dark Jedi and all dark beings in the original trilogy and the prequels. He gained his physical form by Kylo Ren. Kylo Ren as a member of the Knights of Ren needed a physical body for Snoke to possess. Kylo turned to his fellow members of the Knights of Ren to find such body. He was jealous of one particular member and that was Kyle Katarn. Kylo and Kyle we're both Luke's coventated students. Luke saw great potential in both. But, Kylo was jealous of Kyle. Kyle excessed in all of his trainings and gained Luke's trust. Kylo in his jealous rage began seeing vision and hearing Snokes voice from time to time. Snoke would promise him better training and great rewards to come if he could get a body to possess. Kylo Ren one night would convince Kyle Katarn to follow him to the kyber caves that were near Luke's Jedi Academy. This cave was a great source of kyber to create lightsabers for Luke's students. In this cave Kylo and Kyle would have a great duel that would result in Kyle being encapsulated in a kyber shell. Kylo would perform a dark ritual that Snoke taught him. This ritual would rip apart Kyle Katarn's body and turn him into the Great Leader Snoke. Once Snoke had conjured a body him and Kylo would perform a raid on Luke's Jedi Academy. This would result in the Academy's destruction and the death of many of Luke's students. The other Knights of Ren were involved but didn't know the extent of Snokes existence but once they put the pieces together they realized that Kylo betrayed a Knights of Ren member, Kyle Katarn. The other Knights of Ren disagreed with this and this put great fear in them because they we're still loyal to Kyle and saw him as a better leader of Knights of Ren. They feared Kylo because he could do the same to them. They would escape the planet before meeting Snoke and go into hiding.