20 DC Characters Who Could Yet Appear In Arrow And The Flash

19. Sergeant Rock

Superman Harley Quinn
DC Comics

Frank Rock is a World War II veteran who has military ties, has been involved with Easy Company, Amanda Waller, and the Suicide Squad, which gives him multiple "ins" to Arrow.

The Easy Company group was name-dropped during Arrow’s Season 2 finale, whilst Amanda Waller has appeared at regular intervals during the shows run. As for the Suicide Squad, we’ve seen a couple of different incarnations of the rogue team-up so far, too.

With the way that Arrow has used the character of Diggle, we’ve been given a military angle in the show as we’ve got to look at his past moments of serving his country in Afghanistan. Then there’s also the slightly different methods of Arrow’s General Shrieve and The Flash’s General Ealing that could come in to play, not to mention A.R.G.U.S. could be another route for Sergeant Rock to make his debut.

All in all, there’s multiple ways that Sgt. Rock could be factored into either of The CW’s DC shows.

Senior Writer
Senior Writer

Once described as the Swiss Army Knife of WhatCulture, Andrew can usually be found writing, editing, or presenting on a wide range of topics. As a lifelong wrestling fan, horror obsessive, and comic book nerd, he's been covering those topics professionally as far back as 2010. In addition to his current WhatCulture role of Senior Content Producer, Andrew previously spent nearly a decade as Online Editor and Lead Writer for the world's longest-running genre publication, Starburst Magazine, and his work has also been featured on BBC, TechRadar, Tom's Guide, WhatToWatch, Sportkskeeda, and various other outlets, in addition to being a Rotten Tomatoes-approved film critic. Between his main day job, his role as the lead panel host of Wales Comic Con, and his gig as a pre-match host for Wrexham AFC games, Andrew has also carried out a hugely varied amount of interviews, from the likes of Robert Englund, Kane Hodder, Adrienne Barbeau, Rob Zombie, Katharine Isabelle, Leigh Whannell, Bruce Campbell, and Tony Todd, to Kevin Smith, Ron Perlman, Elijah Wood, Giancarlo Esposito, Simon Pegg, Charlie Cox, the Russo Brothers, and Brian Blessed, to Kevin Conroy, Paul Dini, Tara Strong, Will Friedle, Burt Ward, Andrea Romano, Frank Miller, and Rob Liefeld, to Bret Hart, Sting, Mick Foley, Ricky Starks, Jamie Hayer, Britt Baker, Eric Bischoff, and William Regal, to Mickey Thomas, Joey Jones, Phil Parkinson, Brian Flynn, Denis Smith, Gary Bennett, Karl Connolly, and Bryan Robson - and that's just the tip of an ever-expanding iceberg. Where his beloved Wrexham AFC is concerned, Andrew is co-host of the Fearless in Devotion podcast, which won the Club Podcast of the Year gong at the 2024 FSA Awards.