The Crimson Kentavr or Kentavr in the Pixel Gun 3d wiki, also known as The Devil Stalker or The Red Ghoul, Is a hostile mob encountered in the crimson forest in the Nether.
It is very similar to the stalker because of the legs, It also has a body, arms and a head, it has yellow eyes, It has vampire like fangs, it also has no ears.
It used to have creeper like legs instead of a stalker's, but due to Issues with Caseoh (Notch, The Ugly Former Developer of Minecraft who is a transphobe and neo nazi), They became what we know Today, But the Theory is, Why Kentavrs have red like bodies? It's because they came from the Nether.