Character actor Jeremy Davies is joining the Arrowverse for 2018's crossover event, as a doctor from Gotham City's Arkham Asylum. The 2018 Arrowverse crossover is possibly the biggest one yet. Not only will Superman be involved for the first time ever, but Lois Lane, Gotham City, and Batwoman - otherwise known as Kate Kane - will be introduced into the mix.
It's as a part of that latter aspect that Davies' character will enter the picture. The Arkham doc that Davies is playing is an original creation for the Arrowverse, at least that's the official word at the moment. However, all signs point toward Davies being the main villain, and the reason all the Arrowverse heroes are gathered together for the event.
TV Line reports that Davies, known for his work on Lost, 2018's God of War video game, Justified, and much more, will be playing Dr. John Deegan. Throughout his career, Davies has made a name for himself at playing strange and very unnerving characters. It appears that Deegan will fall into that same camp. Deegan is described as being just as crazy as his patients at Arkham Asylum for the Criminally Insane. It's Deegan's actions that will draw the main trio of Arrowverse heroes (Green Arrow, The Flash and Supergirl) to Gotham City.
It's been known from the start that 2018's crossover would introduce Gotham City to the Arrowverse. Davies' casting suggests that the majority, if not all, of the crossover will take place in the hometown of Batwoman (and Batman). The primary location of the Arrowverse crossover might be clearer now, but there's still a lot left to be uncovered when it comes to the big event. Not the least of which is the true nature of Davies' Deegan. The Arrowverse has never been averse to introducing original characters, but given his high-profile presence in the crossover, it's likely that Dr. Deegan be hiding another, more famous, identity underneath. Deegan could well simply be the cover facade of a bigger villain, such as Hugo Strange.
Even if there's not a twist involving the identity of Davies' character, he can still have a huge impact on the Arrowverse. A leaked casting breakdown for the crossover revealed that The CW was looking for a disturbed psychologist and a powerful alien visitor. Davies' casting seemingly confirms half of that leak, so it's safe to assume that the crossover will also include a new alien, possibly Kryptonian, character. Perhaps this visitor from another planet will make up half of a villainous duo, with Davies' Deegan being the brains and them the brawn. Deegan doesn't secretly need to be a famous villain if he has a Kryptonian partner.
The most exciting detail of Davies' casting though is that it confirms, or at least heavily implies, that Arkham Asylum will be featured in the crossover. The Aslyum is well-known for housing some of the most famous and dangerous supervillains in history. Everyone from The Joker to Two-Face has stayed at Arkham. Cassandra Jean Amell has already been cast as the wife of Mr. Freeze, Nora Fries. This implied that her husband would also make an icy appearance, but Freeze could just be the tip of the villainous iceberg. Pun very much intended.
Season 7 of Arrow premieres October 7, followed by season 5 of The Flash on October 9, and season 4 of Supergirl on October 14.
Source: TV Line