Alien animu when?
Which of the so many alien anime do you prefer?
GET THE FUCK OUT OF MY BOARD
Xenomorphs aren't all that surprising. I remember hearing that they were designed like that, all phallic and such.
Predators, on the other hand, can be made surprisingly attractive.
A facehugger is a pair of hands with testicles that wraps around your head, forces its vagina over your mouth, then its penis slides out of its vagina and down your throat and impregnates you. Making Alien sexual takes negative effort, you're surprised by them being cute.