Back when SuperHero comics started in TheGoldenAgeOfComicBooks,
there were no "universes" at first. Each character's adventures
took place in their own little bubble. This came to an end with
the first team-ups, such as the JusticeSocietyOfAmerica, or the
"war" between the original Human Torch and [[{{Namor}} Sub-
Mariner]]. Slowly, individual characters became part of a
greater whole.  This, however, led to a few questions. While it
might make sense that a FreakLabAccident could increase
someone's natural strength and speed to superhuman levels, the
fact that {{million to one chance}}s had independently gifted
fifty or sixty different people with different powers started to
stretch {{Willing Suspension of Disbelief}}. And as the comics
started appealing to an older target demographic, they started
noticing such things more and more.  Thus, certain {{retcon}}s
were set up, changing it so that there was a ''reason'' why so
many people were suddenly receiving super-powers. Essentially,
this was the origin of the