Chris McKay spreads the legend of Dan Harmon’s canned Lego Batman Movie 2 script
The "Lego Superfriends" does have a certain ring to it—unfortunately, it was never meant to be

When someone thinks they have a good sequel on their hands, they do one of two things: Compare it to The Godfather: Part II or compare it to The Empire Strikes Back. Tomorrow War and Lego Batman Movie director Chris McKay is doing the former. He’s also throwing around the name Dan Harmon like chum into the water. It’s not something people do to promote sequels, but it’s sure to whet appetites for a fish dinner that’s never coming.
In a recent interview with Collider, McKay divulged a couple of juicy morsels about the all but dead sequel to his 2017 Lego Batman Movie. Written by Dan Harmon and Michael Waldron, McKay says the script resembles, get this, The Godfather: Part II and Boogie Nights, which we assume is about Batman’s monster hog and not his cunnilingus skills because Batman does not eat out—he only gets drive-thru.
“Dan [Harmon] and [Michael] Waldron had done a first draft of the script that was really great,” McKay said. “It was truly epic…both from an action standpoint and from a story standpoint. The structure was Godfather Part 2… a story about Batman’s relationship to the Justice League (and Superman) now as well as the formative moments of the Justice League (and Batman’s relationship with Superman) then.”