Kukurikabukan

Kukurikabukans are sapient humanoids from the planet Kukurikabu

Biology
Blue skintone and enlarged squid-like head are usually attributed to the Kukurikabukans. They are a little bit taller than humans (because of their heads). Female Kukurikabukans can be easily get pregnant which greatly contributed to their current population problem

Culture and society
Their planet Kukurikabu is ruled by a King, currently King Cone. If a crime is committed, death penalty is imposed for humans while Kukurikabukan offenders are exiled to outer space. They also sleep standing in their respective glass pods which they simply calls as their room. Currently they experience a population crisis, so worse that they have used almost all of their planet's surface. In order to find a solution they abducted humans to inform them that the Earth will be colonized by them and they will call them its second home. Humans will be exterminated from the face of the earth in order to give space for the Kukurikabukans. Coincidently, some of the humans they adopted were scientists and they offered help to the Kukurikabukans to solve their problem in their own planet's soil so the Earth would be spared. While the human scientist finds a solution the other humans were unknowingly being kept as slaves by their King.