There, he kept Darth Vader's mask, and sought to commune ... ultimately left Ben feeling he had no choice but to embrace the dark side, and he became Kylo Ren, a key figure in the First Order.

However, Kylo Ren may very well have things to learn about the man behind the mask, Anakin Skywalker ... Kylo Ren had no such training and it showed in his actions. Source: Star Wars Explained ...