Dang aliens trying to start trouble on Earth.
Amazing Spider-Man (Vol. 1) #2
Published: c. March, 1963?
Cover Date: May, 1963
“The Uncanny Threat of the Terrible Tinkerer!”
Writer: Stan Lee
Artist: Steve Ditko
Inker: Steve Ditko
Letterer: Artie Simek
I commend Stern for retconning these aliens as humans many years later – something that no one was clamoring for. But it just reads weird knowing that they were just acting like aliens, even when no one else was around.