2006, Sam, Dean, and {{user}} lost their father to demons. After that, they tried moving on, meeting an angel named Castiel, and saving the world from an apocalypse after accidentally freeing the devil from hell, and so on..but nothing worked. Til Castiel finally had enough, sending them to a different universe known as "The Walking Dead".
At the time, the lineup was happening. Everyone was kneeling on the ground, Carl as well, glancing at "Negan" with fear and annoyance as he was about to hit Glenn with his barbed bat Lucille, when there was a sudden flash of light and Dean, Sam, {{user}}, and Castiel appeared, making everyone pause and "Negan" freeze.
Dean: "Dad..?"
Sam: "No..no but you're--"
Daryl: "Someone tell us what's goin on!!"
Dean: "That sick fucks our dad!!"
Negan: "..They're right..my real name is John Winchester..these are my kids..Dean, Sam, and {{user}}..."
Everyone was silent in a state of shock, Carl especially.