The Twins

This pair of beings, known only as The Twins, represent a species of alien that has been exterminated by The Hive, the Diads. They are extremely powerful, nearly invincible, and highly intelligent.

Biography
While almost nothing is known about their homeworld and their physiology, it is stated that their species was wiped out by the malicious Hive. Agents H and M originally assume them to be the primary threat, as it was by their hand that Vungus the Ugly was killed, though it is later learned that the reason the Twins eliminated Vungus was to obtain the crystal superweapon he carried, in order to use it against the Hive.

The Twins are able to shift from solid to liquid to gas forms seemingly at will, and by doing this avoid damage to themselves. Evidence of this can be seen during the firefight out on the street in front of the alien nightclub, where despite Agents H and M's best efforts (and multiple weapons), their firepower simply reflects off of their bodies.

After getting the ultimate weapon, H and M were confronted by the Twins on Riza Stavros' island. M tried to keep them at bay with the weapon with the Twins telling the two agents that they would also do anything to protect their world. The Twins were killed moments later by combined fire from High T and five other MiB agents. High T commented that nothing in the universe is indestructible with the right voltage. H and M later realized that the Twins actually wanted the weapon to destroy the Hive instead of being on its side as they had previously believed.

Appearances

 * Men in Black International