Typhon

"People are quick to project human features onto things they don't understand. The Typhon kill us without hesitation. But it's not because they're evil. It's because they can't do otherwise." – Alex Yu talking about Typhon.

Typhon are hostile aliens, formed from a shiny, shimmering grey-black substance that seems to display the characteristics of solids, liquids and gasses all at once, and the Typhon can with ease change the structure and solidity of this to change shape, and use their appendages as weapons.
This semi-solid form is also most likely the source of their high durability. Almost nothing is explained or revealed about their anatomy or biological makeup - indeed, their physiology is incomprehensibly alien. Their sizes and shapes vary greatly, ranging from small arachnid-like creatures to large humanoids and floating orbs, but the vast majority of them are vulnerable to kinetically induced trauma, be it via blunt force or ballistics, or quasiparticle supercharging.
Each Typhon species possesses different abilities such as mimicking matter, telekinesis, teleportation (i.e. quickly phasing or warping to a nearby location), generating fire, electricity, or corrosive gas, mind control, remote machine control, psychic assault, or even creating new species of Typhon. In spite of their complex neural structures, they lack mirror neurons, preventing them from empathizing with the suffering of other beings or even recognizing they are anything more than prey.
It is for this reason that Alex Yu advises against calling them "evil", as they are not intentionally malevolent or cruel, simply pursuing what they see as a food source, which, according to January, is consciousness. Typhon are able to replicate or spawn more of themselves in strange processes, as evidenced by the abilities of Mimics and Weavers.
Despite lacking mirror neurons or empathy, Typhon are able to sense whether the life forms surrounding them are part of their collective or not. As such, they will not attack other Typhon that are not mind-controlled, but will instantly and relentlessly attack any other form of sentient, organic life, especially humans. The only exceptions to this are Tentacle Nests and Cystoids, whose response to their environment is solely based on motion detection.