Yes, Aliens exist and pictures of them exist as well!
Here, are some pictures of Aliens:
Picture of Gray on the Moon during Apollo 17.
Picture of Ancient Woman recovered from Alien Spaceship on Apollo 20.
Alien Gray Leader that made a Treaty with President Eisenhower.
This picture looks authentic to me. Appears to be a Human/Gray hybred.
Appears to be Tall Whites or, possibly, Tall White Hybreds.