In the first episode of season 3, Kate tells Mr. Friendly
that she isn’t going to shower in front of him. Mr. Friendly laughs and
tells Kate that she isn’t his type.

Of course, everyone knows what we’re supposed to think
about Mr. Friendly, but my first crazed thought was Holy Moley!
Mr. Friendly is a space alien!

We’ve seen how the others are observing everyone as
if they are very foreign and unusual. If «The Others» are human, they
could simply study each other. I first believed that «Henry» was really
from Minnesota, then later, after Sayid dug up the body of the real Henry
Gale, we discovered that his name was probably not Henry and he probably
wasn’t from Minnesota. Now, he tells Jack that his name is Ben Linus and
he has always lived on the island. He also has a way to observe the
world outside the island – an island that incredibly isn’t visible to
the outside world. When the plane broke apart over the island, Ben immediately
sent Goodwin and Ethan to observe any survivors and to pretend to be survivors.

Now, realistically, they probably aren’t really from the far
reaches of space. However, something sets them apart from the rest of humanity.
The mystery, of course, is the question: what is the nature of their separation and how did
they get that way?