Tag retroactive continuity
Mulder and Scully inadvertently explore the origins of The X-Files, as two simultaneous storylines converge in Year Zero.
As if the DC Universe wasn’t convoluted enough, along comes a book to help clarify the situation.
Per Ralph The Marvel Universe is a broad canvas, upon which the vast Marvel cast of heroes and villains have adventured for the last 75 years.
If you can change the past, you control the future.