Aliens are anti-biblical. God created the Universe as a habitata for man. The fall of man doomed the Universe to decay and eventual death, and that would kill off any aliens. If God is fair he would not create a race of beings that were more than puppets and doom them to death. Jesus came as a man to redeem original sin, and that salvation is for man alone. Therefore , no aliens.

Thor, Odin, FSM and IPU would not have this conflict. Cluthu is just mean so he might.

FSM = Flying spagetti monster - long may his noodly appendages wave
IPU = Invisible pink unicorn

Global ocean warming is caused by a lack of pirates.