When X-Men was released in the summer of 2000 on a modest $75 million budget, it had the highest opening weekend for a superhero film, surpassing even Batman: Forever despite its complete absence of Jim Carey in green tights or Tommy Lee Jones hating everything and everyone.

“You fucking people.”
So the folks at Fox backed a crazy hunch superhero movies might be a big deal in the 21st century and immediately greenlit X2, a title chosen tboth to appeal America’s hardcore algebra fans and to keep signage costs to a minimum.
The script this go round was to be written by Zak Penn and David Hayter…

“David Hayter?”
Yes. David Hayter, who is perhaps most famous for voicing Solid Snake in the Metal Gear…

“Metal Gear?!”

“NOW CUT THAT OUT!”
Anyway, Penn and Hayter both wrote separate screenplays which were then integrated with the strongest elements from each, which I was very surprised to learn because that would typically be a recipe for a shambling, Frankenstein’s monster of a script whereas here the script is one of the very strongest elements of the whole movie. I mean, it’s not Shakespeare or anything but it is a remarkably well structured piece.
The story largely draws from the 1982 X-Men tale God Loves, Man Kills written by Chris Claremont during that least-discussed era of comics history, the Bronze Age. The Bronze Age is usually dated as having begun with the seminal Death of Gwen Stacey in Spider-Man and saw a new generation of comic book writers inject a more mature and morally complex outlook into classic comic books. The Bronze Age was, ironically enough, something of a Golden Age with all time classics like Watchmen, Dark Knight Returns, Maus and Killing Joke. Unfortunately, less talented writers took the grittiness and mature themes of those books but left the humanity and artistic merit on the shelf which is how the Dark Age happened.

Shadowhawk. He had AIDS.
But anyway, God Loves, Man Kills is very much a Bronze Age book, that leans hard into the X-Men’s role as a stand in for oppressed minorities while commenting on the rise of televangelism and the burgeoning cultural alliance between political conservatives and religious evangelicals that worked out great for everybody. It’s an extremely well-regarded story and an excellent choice for the X-Men’s sophomore film. And, because everything has to be about Wolverine, there’s also some Weapon X thrown in for seasoning.