If aliens do exist they probably look like HUMANS ????

They are often depicted as little green men or even monsters with ferocious teeth and claws, but there may well be aliens that look a lot like humans, a leading evolutionary biologist has claimed.

Professor Simon Conway Morris, a palaeontologist at the University of Cambridge, argues that life on other planets may well follow a theory known as convergent evolution.

This suggests species will independently evolve similar traits and features to solve particular problems presented to them by the environment.
but still no one knows and if its really what you r going to do comment below