Half-humans

Humans are a very adaptable People, so much so that with enough luck they are able to interbreed with individuals from other Peoples. When this happens, the offspring inherits traits from both species and is known as a half-human.
  Half-humans are only able to interbreed with Humans or their non-Human Parent Species, but the offspring will always be a half-human.
  Most cultures still consider half-humans to be humans.