What do you mean by "physically other than human"?

Some people in the otherkin community believe that they inherited genes influenced by non-human genetic material. It occasionally manifests to a greater or lesser degree in some otherkin.

Some Otherkin who appear to have genetic traits from non-human stock seem to have a natural magickal protection which is either an illusion or minor shapeshifting which is called a "Seeming" in the community. ie: they Seem human. Seemings typically fade or melt away when the genetic kin spends a significant time in a magical or safe environment. These people will look more and more inhuman as a gather or ritual progresses.