Okay, first a disclaimer. I did post this theory a while back, on the Far Cry 5/Hope County subreddit. But I realize this is the primary subreddit for the series, and considering that my theory covers the entirety of the series, this seems to be a better place for it. Okay so in FC1 you play as some guy named Jack Carver.
The third and final DLC for Far Cry 6 is now available! Collapse gives you the opportunity to play as Joseph Seed. Unveil his backstories as you struggle with your collapsing faith, suffering the consequences of the chaos you brought on the world… and your family. It is available to purchase/download from your platforms store. .