Arroverse Elseworlds: The Best Easter Eggs, References and Cameos

The Arrowverse has been limited on which DC characters and events it can and can’t show for years (even being forced to kill of it’s version of the Suicide Squad to make way for the feature film) but that has never stopped Arrow, The Flash, Legends of Tomorrow, and Supergirl from leaving plenty of hints, references, and teases to the wider DC Universe, here is our list of the best easter eggs, references and cameos we noticed in 2018’s Elseworlds crossover.

30. Crisis on Earth X:

The 2017 Arrowverse was titled Crisis on Earth X, and showed an evil Nazi version of both Green Arrow and Supergirl coming to Earth 1, from Earth X. The almost lightning bolt S symbol from that reality gets a brief reappearance during the final part of the Elseworlds crossover whilst the Deegan Superman is trying to alter reality, and we see the symbol plastered across Star Labs, just like it was on Earth X.

29. Kryptonite Weapons:

The only real way for other heroes (both superpowered and not) to take on a Kryptonian is with Kryptonite, and over the years people like Batman and Lex Luthor have crafted the Kryptonite into specific weapons better suited to fighting the Man of Steel.

We see during the Elseworld’s crossover that the Green Arrow has another Kryptonite arrow head (following from him using on in the Criss on Earth X crossover), that he is more than ready to shoot at Sueprman.

28. The Original TV Flash:

Although Grant Gustin’s take on Barry Allen in the Arrowverse is the go to depiction of the character on screen, it was far from the first in live action. With the original being Jon Wesley Shipp in the 1990’s tv show.

There have been plenty of references to that original Flash show in the Arrowverse, with a number of actors including Mark Hamill, reprising their roles or showing up as similar ones at least, and Jon Wesley Shipp showing up as Barry’s dad and Jay Garrick. The biggest reference however came during Elseworlds where Jon Wesley Shipp reprises his role of Barry from the 90’s show, with that world being fittingly dubbed as ‘Earth 90’.

27. X-Men’s Sentinels:

Admittedly this one may be a little bit of a stretch, but when Cisco finds out that Oliver and Barry have switched places, he asks what he should call them, suggesting ‘Boliver’ as a possible option.

There are no prominent DC comics characters with the name ‘Boliver’, but there is a well known Marvel character called ‘Bolivar’ – namely Bolivar Trask, Mutant hater and the creator of the Sentinels, who was played by Peter Dinklage in X-Men: Days of Future Past.

26. Wayne Tower:

As a landmark of Gotham City, Wayne Tower is a must for any version of the city. The tower and Wayne Enterprises (along with the new Arrowverse iteration of the company logo), play an interesting role in the Elseworlds crossover, acting as the base for Kate Kane, as well as showcasing that both Batman and Bruce Wayne are missing in the Arrowverse’s Earth 1 – with Wayne Tower being almost completely abandoned and disused.

25. Bizarro:

As a famous Superman foe from the comics, Bizarro, is essentially a mirror image of Superman. Various origins for Bizarro have existed over the years, but the most common is Lex Luthor’s attempt at cloning Superman which goes wrong, which usually comes down to the combination of Superman’s Kryptonian DNA with human genes resulting in a being that isn’t quite either.

Supergirl took on her own version of Bizarro in the aptly named Season 1 episode ‘Bizarro’, but there haven’t been many references since. Whilst the Deegan Superman fights the real Superman from Earth 39, a bystander calls the real Superman ‘Bizarro’, implying that in this altered reality the Deegan Superman took on his own Bizarro at some point in the past.

24. Psycho Pirate

Psycho Pirate is, generally speaking, a relatively unknown villain from the comics, but he does play a prominent role in the iconic Crisis on Infinite Earth event (which looks to be playing a huge role in the Arrowverse next year).  Psycho Pirates powers have varied over the years, but usually tend to involve his manipulation over people’s emotions, and other psychic powers. He makes his Arrowverse debut here as a Arkham inmate.

23. Arkham Asylum:

Any appearance of Gotham in the Arrowverse was sure to include the most famous supervillian prison; Arkham Asylum. Starting out with a shot fans have seen a number of times throughout tv, movies and comics the infamous Arkham Gates headed with the gothic style signage. The sequence goes on to showcase everything you’d expect from an Arkham scene including a creepy secret part of the asylum, a prisoner breakout and lots (and lots) of Batman references.

22. Poison Ivy

Pamela Isley, better known as Poison Ivy, has a long history as one of Batman’s most notorious villains, originally debuting in 1966, the character has gone on to become best friends with Harley Quinn and outline herself as less of a generic villain, and instead one who will do anything to protect the plant life of Earth.

Ivy doesn’t get a huge nod in the crossover, but we do see that her name is on one of the cell doors, as well as number of vines throughout the Asylum.

21. The Riddler

The Riddler is one of Batman’s best known enemies, and has been a hugely prominent villain in the comics for decades, stars in Fox’s Gotham, and was played by Jim Carey in 1995’s Batman Forever. Edward Nigma again doesn’t have a huge reference in Elseworlds, but his name is clearly marked alongside Poison Ivy on one of the cells.

20. Clayface

Clayface has had perhaps the most incarnations of Batman’s villains over the years, but the original was Basil Karlo, an ageing (or unsuccessful, deepening on the version) actor who once played the character Clayface in a movie.

After reprising his role as a criminal, eventually Clayface gains real powers. With a number of iconic storylines and even turning into one of Batman’s allies during DC’s Rebirth reboot. The reference to Basil is small, and is another of the names we see on a cell door in the Asylum.

19. Penguin

The Penguin reference is another small and subtle one, but we do see that the crime boss and weapons smuggler is currently held at the Asylum, no doubt thanks to a past confrontation with either Batman or Batwoman.

18. Captain Boomerang:

A somewhat frequent inmate of Arkham Asylum, Captain Boomerang, who is primarily a Flash villain, but has appeared in Gotham numerous times, and features regularly as a part of Task Force X, better known as the Suicide Squad.

In the Arrowverse, Captain Boomerang is dead, following numerous confrontations with both Team Arrow and Team Flash, even being imprisoned on Lian Yu. It does appear however that Digger Harkness spent some time at the Asylum, with one of his Boomerangs visible in the storage roomed filled with a number of Bat-Villain artefacts. Interestingly just before the Boomerang there are some grenades that could either be another reference to someone like Penguin, or even a very vague hint at the Joker, although it’s not too clear either way.

17. Mr and Mrs Freeze:

The primary drive of Batman villain Mr. Freeze, the alias of Victor Fries, is to heal his cryogenically ‘frozen’ wife from an incurable disease. In the Arrowverse however, Noras Fries, appears to be cured, or is at the very least not frozen and is in fact a patient (or inmate) at Arkham.

During Deegan’s breakout, Nora escapes and mangoes to find her husbands Freeze gun (in the process confirming Mr. Freeze as an active villain in the Arrowverse), and uses it to attack Caitlin Snow.  As a double easter egg Nora is played by Cassandra Jean-Amell, the real life wife of Arrow star Stephen Amell.

16. Scarecrow’s Gas:

One of the more plot orientated Bat-Villain easter eggs is the Scarecrow’s fear gas. As Batman fans know Scarecrow’s fear toxin causes the victim to hallucinate some of their greatest fears.

During the fight with Nora Fries, Oliver/Barry accidentally knocks over a box filled with the toxin, marked up as the property of ‘Crane, J’, aka Jonathan Crane, the secret identity of the Scarecrow. The gas goes on to make both Barry and Oliver imagine they are fighting Reverse Flash and Malcolm Merlyn respectively, whilst they are actually fighting each other.

15. Bane’s Mask:

Another reference to a better known Bat-villain is the very quick shot of Bane’s mask in Arkham Asylum. Just before Nora Fries manages to assemble the Freeze gun and attack Caitlin/Killer Frost we see Bane’s mask sitting on a bust in amongst the other artefacts.

This isn’t a new design for the mask, but is instead pretty much the exact same one that we see Tom Hardy don in Cristopher Nolan’s Dark Knight Rises.

14. World’s Finest:

World’s Finest is a key phrase in DC Comics and was it’s own book from 1941 to 1986, acting as a showcase for a number of DC characters, but primarily focussing on Batman and Superman working together, becoming synonymous with the two. In the Arrowverse, the first mention of the World’s Finest was in the title for the mini Flash/Supergirl crossover during Supergirl’s first season.

The term “World’s Finest” makes another appearance during the second episode of Elseworlds where Batwoman notes her and Supergirl would make a great team, going on to say that they’d be the ‘World’s Finest”.

13. A.M.A.Z.O:

Originally debuting in 1960, Amazo is an android created by Professor Ivo to duplicate the powers of any superhero it goes up against, then using those powers to defeat them. His numerous abilities and adaptability has ensured that Amazo has taken down the full Justice League numerous times over the years.

Amazo has been referenced in the Arrowverse, being the name of a boat that visited Lian Yu during Oliver’s Season 2 flashbacks, but has never actually appeared until now. Amazo appears throughout the crossover, accidentally being activated by Oliver whilst he’s getting used to his new Flash powers, proving particularly difficult to take down.

12. Ivo’s Return:

With Professor Ivo having died during Oliver’s second year on the island, he clearly didn’t create the Amazo android in the Elseworlds crossover, but the show still managed to link the two characters.

Ivo was shown to be the creator of Mirakuru, the serum that gives Slade Wilson his powers (and makes him turn on Oliver), this episode shows that Amazo is powered by a version of Mirakuru, and was developed by Ivo Laboratories, showing Ivo’s legacy lives on.

11. The Black Super Suit:

Shown in the trailers, we knew going in that Superman would don a black version of his regular suit in the Elseworlds episodes, but it wasn’t clear why. The eventual explanation is that it isn’t really Superman, but the suit actually has a number of deeper comic book ties.

With the most famous association being the iconic Death and Return of Superman storyline from the 90’s, in which Superman died and the returned (if you couldn’t guess). When he returned he wore a black, capeless, suit. The suit has shown up numerous times since in the comics, and was even made (but eventually cut) from 2017’s live action Justice League movie.

10. The Whereabouts of Bruce Wayne:

With a number of smaller references to Batman and his world in the Arrowverse over the years, with Bruce Wayne himself being name dropped by Oliver Queen during one of his mayoral press conferences, but Batman’s alter ego has primarily been absent, almost obviously so, from this version of the DC Universe.

In a nutshell, it seems that his crusade as Batman finally got the better of him, and he mysteriously disappeared after Gotham ceased to improve under his protection, since then Batman’s existence has dipped into that of rumour, with even Oliver Queen denying he exists.

9. Lois Lane:

With a lot of the main Superman rights being a little more complicated and a number of principal Superman related characters being absent from Supergirl for the first season, and Superman himself not even showing up until the Season 2 premiere (following the shows switch to the CW). But even with this slow introduction of more and more elements form Superman lore, one huge character that still hadn’t appeared in person was Lois Lane.

Finally making her full Arrowverse debut in the Elseworlds crossover, Elizabeth Tulloch features throughout the crossover as Lois, who ends up shaping the Arrowverse’s (or at least Earth 39’s) version of Superman’s story in a pretty interesting direction moving forward.

8. Batwoman:

One of the biggest reveals from Elseworlds was that Batwoman (and presumably Batman) exist in the Arrowverse’s Earth 1. The crossover debuts Ruby Rose as the first live action Kate Kane, in a small role (with only a few scenes), but manages to establish her well enough for her own upcoming show.

7. The Bat-Signal:

Furthering the idea that Batman really has been a part of the Arrowverse’s Earth 1 all along, upon arriving in Gotham, and Oliver claiming that Batman is a myth, Barry unveils a clearly old and out of use Bat-Signal. This version of the signal sports the more classic Bat logo scene for the longest time in the comics and used in the 89’ Batman movie.

6. Alfred Pennyworth:

With Oliver, Barry, and Kara using Wayne Tower as a base of operations while they work out their plan of attack against Deegan. Ruby Rose’s Kate Kane seems keen to help the trio, and even offers them the WiFi password which is of course ‘Alfred’ – one of the more obvious references to Batman’s world.

5. Green Lantern

With rumours suggesting, and fans hoping for, Arrow’s John Diggle to become a Green Lantern, Elseworlds finally gives fans the biggest hint yet at John being a Green Lantern… on another Earth at least.

When Jon Wesley Shipp’s Barry Allen appears from Earth 90 he sees Diggle and mentions his ring and powers, implying that on his earth John is a Green Lantern. Whether or not that means Diggle is a Lantern, or that someone, perhaps John Stewart, looks just like Diggle on Earth 90, is unclear, but it’s the best and biggest hint we’ve had at Green Lanterns in the Arrowverse so far.

4. Crisis on Infinite Earths:

Perhaps the biggest shock of the crossover came in the final scene, with LaMonica Garrett’s Monitor constantly referring to his search for heroes strong enough to fight against someone much more powerful than himself – it quickly became clear that he wasn’t referring to anything that would happen in this crossover.

The final scene reveals that next years crossover will be titled ‘Crisis on Infinite Earths’, leading on from the unknown deal Oliver Queen made with the Monitor to ensure his friends safety, and presumably into the Arrowverse’s interpretation of the iconic comic book event.

3. Messing With Time, Superman ’78 Style:

One of the more infamous parts of Richard Donner’s Classic 1978 Superman movie is Superman racing around the world, reversing it’s rotation, turning back time in an effort to save Lois Lane. In a clear homage to that movie Barry suggest that they could slow down time to give Earth 39’s Superman more time against the Deegan Superman, and to do it Barry will run around the earth whilst Kara flies in the opposite direction.

A number of other scene and shots, such as Superman saving and setting down the Helicopter and him catching Lois, are also references to the original 1978 movie.

2. Fallen Heroes:

Showcasing the fact that the Elseworlds crossover is out to include a huge amount of easter eggs, and references the opening scene is literally filled with them. As we see Jon Wesley Shipp’s Barry Allen on Earth 90 he is surrounded by a number of fallen superheroes.

Among the dead heroes we can see Vixen, Powergirl, a Hawk helmet, Captain (or Citizen) Cold, Firestorm, and Green Arrow. The most interesting of these being Green Arrow, who despite an number of Arrow suits already being available looks to be lined with a yellow stripe, mimicking that of the Oliver Queen/Green Arrow from Smallville.

1. “Somebody Saaaaaaaave Me”:

Speaking of Smallville, as much as Arrow was really the start of a now huge universe that includes tv shows, animated series, tie in comic books, and annual crossovers, what really set the path for the entire Arroverse, was Smallville.

Spanning 10 seasons and moving from the WB to the CW (now the home of the Arrowverse) Smallville really set the benchmark for superhero tv, and included it’s own version of the Flash, Green Arrow, Black Canary, the Justice League and number of other heroes that have gone on to appear in the Arrowverse or their own movies. Given the title the show primarily took place (at least for the first few seasons) in Smallville, in particular on the Kent farm, following a young Clark Kent.

For the scenes showing Clark and Kara at Earth 39’s version of the Kent farm in the Elseworld’s crossover, the farm looked extremely familiar. That’s because it was filmed at the  exact same farm Smallville used.

This would of been enough of an easter egg in itself, but the icing on the cake was Remy Zero’s ‘somebody Save Me’, Smallville’s themes tune, over the top of that scene, marking itself as the best reference of a crossover filled with some incredible easter eggs, cameos, and references.