San Diego Comic Con, eh? One of the greatest events in the genre calendar, and now comes a little bit of casting news for The CW’s Arrowverse.

We’ve already brought you the first trailers for the brand-new seasons of Arrow, The Flash, DC’s Legends of Tomorrow, and Supergirl, but now it’s time to take a proper look at some of the new additions being brought in by these hugely popular shows.

First up, Supergirl has again shown how progressive and all-encompassing it continues to be, with the Melissa Benoist-starrer having brought in Nicole Maines as Nia Nal. This new addition to the CatCo team is described as “a soulful young transgender woman with a fierce drive to protect others.” As the new season plays out, we’ll see the character become the superhero Dreamer. In addition to Maines joining the show, Doctor Who’s David Ajala is to play Manchester Black; a battle-hardened sort who has a sense of humour and a dark past.

While Supergirl introducing the first transgender superhero is clearly a hugely welcome move, some will find some of Arrow’s new additions to be similarly pleasing. As the Stephen Amell-headlined genre fave closed its sixth season, Oliver Queen went public with being the Green Arrow – in turn being locked up for his vigilante crimes against Star City. Similarly, we then saw Kirk Acevado’s Ricardo Diaz tease bringing in the infamous Longbow Hunters. And now, we’ve found out that Whistler’s Holly Elissa will be playing the lethal Red Dart, Van Helsing’s Michael Jonsson will be playing the hulking Kodiak, and Orphan Black’s Miranda Edwards will be playing the sneaky, stealth-heavy Silencer. In the comics, the Longbow Hunters are a major, major deal, and they should prove the Emerald Archer with yet another stern test in addition to him having to survive in prison. And on that front, Michael Jai White, Vinnie Jones, and Cody Runnels will be reprising their villainous roles of Bronze Tiger, Brick, and Derek Sampson during Ollie’s time locked up – which should make for some fun TV given that, y’know, all three are in prison thanks to the Green Arrow.

Speeding over to Central City, and the fifth season of The Flash has revealed its ‘big bad’. We’d previously heard rumblings that the main villain could well be Cicada, and that it is indeed the case – with American Pie’s Chris Klein having signed on to play the season-long rogue. This take on the character has him pegged as “a grizzled, blue-collar everyman whose family has been torn apart by metahumans.” Which, of course, means that he’s now on his own personal mission to wipe out each and every metahuman he can find.

Over with the ragtag Legends team, and DC’s Legends of Tomorrow has brought in Santa Clarita Diet’s Ramona Young to play a new series regular called Alaska Yu. The early word on the character has her down as “a typical twentysomething easily swept up by romantic notions and fantasy novels, she’s something of an expert in the world of the magical creatures that the Legends encounter.” And along with those magical creatures that will make up such a large part of the series’ fourth season, we already know that Matt Ryan’s John Constantine will become a full-time member of the Legends group. Elsewhere, Tom Wilson will be back to play Hank Heywood, the father of Nick Zano’s Nate Heywood… and yes, Beebo will also be back at some point in Season 4! In one final interesting Legends twist, Maisie Richardson-Sellers will be back to play a completely new character. The actress has previously played the Amaya Jiwe version of Vixen in the past two seasons of the show, but Amaya was last seen deciding to settle in 1942 Zambesi in order to live out her own destiny. In this new season, Richardson-Sellers is to play a British character called Charlie. Described as a rebel without a cause, Charlie will have ties to the magical portal that the Legends have opened.

Right, we think that just about covers all of the recent Arrowverse casting news, but then this is Comic Con after all. That means that there could well be more announcements still to come as the aftermath of SDCC plays out. As ever though, expect more on all of these shows as we get it.