Ermac: He grabs the opponent with his telekenesis, and raises them into the air off screen. He then makes a fist with his hand, and we hear the opponent scream. Ermac then leans back as blood rains down on top of him.
Havik: He rips out his opponents humerus (a bone in their arm, for those who aren't good at biology.) then pounds them into the ground with it, similar to one of Jax's fatalities. He then stomps on their head, crushing it.
Scorpion: He fires 4 spears at his opponent, one going into each of their limbs. He then, holding 2 spears in each hand, moves his arms to make the opponent dance, like a human marionette. He then pulls them apart, ripping off their arms and legs.