Introduction
This DC Animated Universe timeline consists of the series Legion of Superheroes.
However, please note that this timeline is unofficial. That is, this timeline is created from my own personal observations and research. In order to make sure that this timeline maintains it consistency and validity, I had to incorporate many assumptions and constraints.
An assumption is easy enough to understand. I take a vague statement and add my own thoughts on what that means. .
A constraint is something, in this case fact, that is binding and can not be modified.
With that said, here is the Legion Timeline.