Snoke had several apprentices before
he became invested in the
Skywalker bloodline, believing
General Leia Organaand
Han Solo's son,
Ben Solo, the grandson of
Darth Vader and nephew of
Jedi Master Luke Skywalker, had the right balance of the
dark and
light sides of
the Force in him.
[1]
Leia was aware of the influence Snoke could have on her son, but did not inform Han, believing he would not understand, and that, as a
Force-sensitive, it was her responsibility to keep Ben away from the dark side.
[1] Eventually, Snoke successfully turned Ben to the dark side, anointing him Kylo Ren, master of the
Knights of Ren, and ordered him to
destroy Skywalker's revived
Jedi Order. Though Ren succeeded in slaughtering the entirety of the fledgling
Jedi Order, Skywalker managed to escape into hiding.
[2]