Part II, notably, reveals the identity of Twilight after months of speculation; this revelation was leaked early due to cover solicitations, leading to much early controversy and speculation, as well as damage control from showrunner Joss Whedon and Dark Horse Comics editor Scott Allie.

Giles explains to Willow, Xander, Dawn et al. a myth about the Slayer that, in short, ultimately means that Buffy and Angel are destiny's vehicles in bringing the old universe to a close and beginning a new one.

Despite the prospect of eternal happiness with Angel in the paradise dimension, Buffy questions the new reality after observing the situation her friends are in.

Part I features many homages to comic book superheroes, notably DC Comics' Superman, as Buffy and Xander attempt to test the extent of Buffy's powers, testing them against the popular Superman phrase, "faster than a speeding bullet, more powerful than a locomotive, and able to leap tall buildings in a single bound".

In Part II, Andrew attacks Twilight with a suit of armour incorporating many facets of popular DC and Marvel Comics superheroes.

This is a comment on the perceived indebtedness of Meyer's Twilight, which is primarily a romance between a teenage girl and a good-natured vampire, to Whedon's Buffy.

[1] Prior to the release, Season Eight artist Georges Jeanty had mocked up a spoof cover depicting the revelation that Twilight was US President Barack Obama.

[2] Due to the April solicitations releasing covers by Jo Chen and Georges Jeanty which clearly show Twilight to be Angel, and of actor David Boreanaz' likeness, Scott Allie was interviewed by Comic Book Resources.

Allie stated that he had known of Twilight's true identity "from the get-go" and had struggled to keep it a secret all this time; four years ago, Whedon wrote out a "Buffy Manifesto" which included the identity of Twilight which was circulated under strictest confidence to Dark Horse editorial and the various comic and TV writers who would be contributing to the series.

It's not as clear as it appears to be with those covers slipped out.The reveal led to the trending of the #twilightisangel hashtag on the popular microblogging site Twitter.

"[4] Brian Lynch, writer of IDW Publishing's own canonical Angel: After the Fall and an upcoming Spike series came up with the idea on the night of the announcement.