Not really but it is fun to pretend that it is real
Since they do not appear to exist, they can't.
It doesn't exist in real life, but it can in the Ben Ten series.
Obviously blueberry pancakes like alien ears
There is no proof that aliens exist. I believe there is no such thing as aliens. Has anyone seen an alien ship? Has anyone seen an alien? No.
in space he is an alien
Aliens don't exist
There is no scientific proof that alien races exist in the universe so we have no idea what they might look like if they did exist.
No. No alien species are known to exist at this time.
If alien races do exist, they could possibly have hermaphrodite characteristics.
Alien races could possibly have elf characteristics if they do exist.
If alien races do exist, they could possibly have green blood.
If alien races exist, they could possibly have black blood.