Arrowverse Elseworlds Trailer Breakdown: 12 Secrets & Reveals About The Crossover

Arrowverse Crossover Trailer Breakdown

The trailer for Arrowverse Elseworlds has some big reveals about the upcoming crossover event. With the mid-season finales of the three shows teaming up having aired, The CW has released one final trailer that is packed full of revelations. Some of them are simple character reveals, such as our first look at Kate Kane without the Batwoman costume. Others involve supervillains who had not previously been advertised as part of the event.

However, there was a lot of new information in the latest Elseworlds trailer. It reveals some substantial new information about the Arrowverse crossover story and hints at the ultimate identity of the mysterious Dr. John Deegan at the center of the plot, and the strange book he is given that has the power to rewrite reality.

Related: Arrowverse Elseworlds Tease Explained: 1990s Flash vs The Monitor

With three different shows colliding, a new superhero being introduced, and some very weird body-swapping going on, let's see what we can figure out from the new Arrowverse Elseworlds trailer.

12. Oliver Queen & Barry Allen React To Swapping Bodies

Elseworlds Oliver Queen and Barry Allen

One of the first big reveals regarding Elseworlds was that Oliver Queen and Barry Allen would be trading places for the duration of the event. The opening scenes of the trailer show that the two heroes have swapped bodies, a la Freaky Friday, rather than reality being rewritten so that Barry Allen was stranded on Lian Yu and Oliver Queen was struck by lightning. This point is further emphasized as Caitlin Snow asks a confused Oliver Queen if he's sure he didn't go back in time and accidentally change the timeline again. Barry Allen, in Oliver Queen's body, insists that he is Barry Allen.

11. Elseworlds' Villain Gets The Book of Souls

Elseworlds The Book Of Destiny

A new scene shows Dr. John Deegan being handed a large book by an alien being and being told to "reshape the world as you see fit." Both the book and the alien being (previously identified as a Monitor) appeared in the Elseworlds prologue. The book has not been identified by any particular name yet, but it resembles The Book of Souls - an artifact in the DC Comics Universe that is capable of rewriting reality and is usually possessed by Destiny of The Endless, from Neil Gaiman's Sandman.

10. 1990s Flash Enters The Arrowverse Crossover

Elseworlds John Wesley Shipp The Flash Earth-90 A Crisis Is Coming

Another early revelation regarding Elseworlds was that it would feature the version of Barry Allen played by John Wesley Shipp on the 1990s The Flash television series. Now identified as The Flash of Earth-90, this Flash appears in a new scene in the new trailer, warning us that "... a Crisis is coming." The classic DC Comics had several major events which were labeled with the word "Crisis" but the most famous of these - Crisis on Infinite Earths - has been hinted as a probable future event for the Arrowverse since the first episode of the 2014 Flash series.

9. Kate Kane Rains On Your Parade

Elseworlds Ruby Rose as Kate Kane Batwoman

The trailer gives us another look at Batwoman in action, apparently fighting Cisco Ramon. When Cisco asks who she is, the action suddenly cuts to a clip of a Ruby Rose, not in the Batwoman costume, saying "The rain on your parade." This is the first time that we have seen the actress in something relating to the crossover event where she wasn't dressed up as Batwoman.

Related: Arrowverse May Be Teasing The Joker In Elseworlds Crossover

8. Team Flash Turns On Barry Allen

Elseworlds Harltey Sawyer as Ralph Dibny Elongated Man

There is a rather lengthy sequence in the trailer where Oliver Queen yells at Barry Allen that he was betrayed by his team and that they weren't there for him when he needed them. This begins with a scene of Barry Allen being knocked out by a clearly distraught Elongated Man. There's no indication of why Team Flash might turn on Barry, but a safe bet is they may be afraid he's lost his mind if he continues to insist that the real Barry Allen is Oliver Queen and vice versa.

7. Killer Frost Working With ARGUS?

Elseworlds John Diggle and Killer Frost

During the sequence in which Oliver Queen shouts at Barry about being betrayed by Team Flash, we get another quick clip that seems to show Killer Frost and John Diggle together.  Killer Frost has her hair done in an intricate braided style and also seems to be wearing a black ARGUS uniform. This presents an interesting possibility: could Caitlin Snow's disassociated personality have a separate physical presence in the world of Elseworlds, who is employed by ARGUS? Or is Killer Frost just temporarily working with ARGUS?

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