As aforementioned above, Ermac is not one person, but an entire collection of entities brought together in physical form through magic, courtesy of Shang Tsung and thus, refers to himself as a group instead of a singular. Because of this, Ermac possesses powers related to the soul, mostly used in the form of telekinesis, which allows him to manipulate every aspect of living and non-living objects with his mind. In addition, he is able to manipulate soul energy because of his composition, which he uses in the form of both levitation and firing projectile attacks. Ermac's one weakness is the Netherrealm itself. Since he is a being created by magic, his powers would decrease over time the longer he stays in that realm. However, that doesn't mean he'll be left powerless. His green Jewels that he wears on his costume introduced in MK:Deception and MK:Armageddon's storyline shows that they enhance his telekinetic ability and powers.
Having descended from a race of Outworld inhabitants known as Cryomancers, Sub-Zero has innate ability to control ice in many forms. Throughout the span of the series, Sub-Zero's powers have continued to evolve. Aside from flash-freezing opponents, Sub-Zero also has the ability to instantly conjure up an ice statue of himself to act as both a scapegoat and a 'landmine' of sorts as any who touch it instantly flash freeze. Due to the Dragon Medallion's addition to his arsenal, Sub-Zero's powers have increased significantly, now able to form weapons out of ice. Exactly how powerful he is storyline-wise unknown. His former ally Frost only knows how to make ice daggers, while Sub-Zero, due to the Dragon Medallion, can form a giant sword named the Kori Blade. He can even go as far as freeaze the moisture within the air into any form, even making it a misty type form, hinting that he freezes even molecules. Raiden has commented that Sub-Zero is more powerful that his brother.
Reptile appears to take abilities from several reptilian creatures. As a Saurian, Reptile remains mostly human in appearance. However, like Scorpion, the mask and the skin behind it is a mere guise to his true lizard form. However, he appears to remove his mask more often than Scorpion. His saliva is compromised of powerful corrosive fluids that can easily burn right through steel, much like acid. He is also able to fire homing concussive blasts of energy. Reptile's distinguishing trait is his ability to render himself completely invisible. As revealed in one piece of art for Deadly Alliance, a Saurian's appearance is human for the most part. However, the longer they are separated from one another, the more their human guises degrade and vanish over time until their true forms are revealed. The change is more than skin deep as it also can affect the mind as well. Saurians who lose their disguises completely will begin to regress into primal fits of blind rage, attacking both friend and foe.
Being the vengeful spectre he is, Scorpion is most associated with the element of hellfire, a darker variant of the Earth-related fire element that burns and consumes both the body and soul of its victims. Scorpion only seems to use the element to confirm the death of his opponents. As a specter, Scorpion is immune to death as his soul is still bound by revenge, allowing him to endlessly chase his targets until they have been silenced. He has the ability to teleport, often used in the form of surprise or ambush attacks. In addition, Scorpion no longer has a face. The mask (and the skin behind it) is a disguise that hides his ghastly skull, from which he can spew forth lethal shots of hellfire. The scope of Scorpion's powers differ on how long he remains in his abode, the Netherrealm. This proves to be advantageous to him when he pursued Quan Chi in the depths of hell, whose magic is diminished by the power and nature of the realm. It is unknown how powerful Scorpion would have been had he'd stayed in the Netherrealm without the concern of chasing Sub-Zero, and later, Quan Chi.
Scorpion's most recurring weapon is the Spear, a kunai attached to a sturdy rope, representing Scorpion's "Stinger". At times, the spear would be empowered with hellfire for more power.
Batgirl (Cassandra Cain)
The fight takes place in the Batcave, No Prep Time.