Mortal Kombat: Deception
With Smoke as his template, Noob Saibot planned to return to the Netherrealm and use Smoke's nanotechnology to create an army of cyborg demons. He was unaware that they were followed by someone Noob had not seen since before he became a wraith. Smoke instantly recognized their visitor. He was an echo of their past. He was Sub-Zero, Noob Saibot's brother.
Noob Saibot was surprised to see how much stronger his brother had become. If he were still Lin Kuei, still human, he would probably have shown some degree of pride. But, as Raiden had revealed during the ordeal with Shinnok's Amulet, his soul had been tainted when he died at the hand of Scorpion. Noob Saibot, the original Sub-Zero, had descended into the Netherrealm free from compassion. He ordered Smoke to assist him in slaying his brother - his first act as ruler of the Netherrealm.