Orkans are a humanoid species almost identical to Earth's humans in appearance, but unlike them, they have a number of genetic differences that an earthling would not be aware of without extensively getting to know an Orkan. An Orkan for example has many organs similar to an earthlings, but unlike them, they have three hearts and no liver. Their ears are also just removable attachments and for some Orkans it is difficult to tell the difference between a male and female as "some parts" are also interchangeable (apparently referring to the breasts), however this was not a matter of confusion with Orkans before as romance had long since been outlawed along with emotions, although as Mork's reports about Earth have grown in popularity, it seems Orkans have adopted to be more physically similar