- Not to be confused with the Season 1 episode ""
- "Well, we got a Rag Doll. A Weather Witch. And, uh... hold up, is that... Crazy Bee Girl? Hey, girl, what's going on? What a throwback."
- —Cisco Ramon
"Gone Rogue" is the twentieth episode of the fifth season of , and the one-hundred-twelfth episode overall. It aired on April 30, 2019.
|Barry continues to struggle with how he feels about Nora's betrayal. Brie Larvan, Joss Jackam and Peter Merkel return to Central City. Meanwhile, Cisco makes a bold decision.|
Nora shows up back in Central City and we see that she's amassing a group of past Arrowverse reprobates including Ragdoll, Weather Witch, and Bug-Eyed Bandit to take a thing from STAR Labs. In a little while, she trips a caution in the STAR Lab chronicles, alarming Barry to her quality. He attempts to talk her down from however she assaults him and escapes. We see the other three track down and abduct Cisco and Sherloque, taking them to their new den. Nora has taken Spencer Young's telephone from STAR Labs, something she's attempting to get her prisoners to help open.
Barry and Iris proceed with their battle from a week ago over the treatment of Nora, with the last attempting to persuade the previous that possibly Thawne is attempting to make up for himself by exhorting Nora on the best way to bring down Cicada. Later on, Joe discloses to Barry he trusts Nora too.
Subsequent to driving Cisco and Sherloque to reinvent the telephone, Nora and her companions use it to break into the vault at McCulloch Industries, in quest for power-hosing innovation. When they break in, Weather Witch and Queen Bee, as she passes at this point, flip sides and turn on Nora — as they need Barry to uncover his mystery personality to the world.
Barry and the remainder of Team Flash figure out how to sneak their way into the office and help Nora bring down her previous colleagues. It's here Barry at long last apologizes to Nora. After the group and family reconvene at STAR Labs, Nora uncovers she needed to take a bit of innovation that would diminish Cicada's knife to nothing and Barry concurs with the arrangement. After Cisco and Sherloque test the tech, they understand Cicada's arrangements — she's planning to murder each metahuman inside the city.
Somewhere else, an alarm goes off at Caitlin's dad's labs — Cicada has stumbled something there. She and Ralph go to research.
- Grant Gustin as Barry Allen/The Flash and Harrison Sherloque Wells
- Candice Patton as Iris West-Allen
- Danielle Panabaker as Dr. Caitlin Snow/Killer Frost
- Carlos Valdes as Cisco Ramon
- Hartley Sawyer as Ralph Dibny
- Danielle Nicolet as District Attorney Cecile Horton
- Jessica Parker Kennedy as Nora West-Allen/XS
- Chris Klein as Orlin Dwyer
- Tom Cavanagh as Sherloque Wells
- Jesse L. Martin as Detective Joe West
- Sarah Carter as older Grace Gibbons/Cicada
- Emily Kinney as Brie Larvan/Queen Bee
- Reina Hardesty as Joss Jackam/Weather Witch
- Troy James as Peter Merkel/Rag Doll
- Adam Bergquist as Randolf Morgan
- Brian Calvert as McCulloch Executive
- Islie Hirvonen as Grace Gibbons
- Quentin Schneider as McCulloch Guard #2
- Eric Schweig as General Cloud
- Khamisa Wilsher as McCulloch Guard #1
- This is the eighth episode with "Rogue" in the title.
- This episode marks the first physical appearance of Emily Kinney (Brie Larvan) in the series since the Season 1 episode, "", although she did appear on Season 4's "".
- The title card changes to Nora's lightning, albeit it is now purple and red due to her newfound connection to the Negative Speed Force.
- Nora breaks into an architecture firm called "G. Simone & Associates", a homage to iconic writer Gail Simone who became a bonafide fan-favorite over the years with her work including Birds of Prey, Batgirl, Sinister Six, and a whole lot more. Among the list of characters she's created is the Peter Merkel incarnation of Rag Doll.
- One of the cross-streets mentioned by Team Flash being "34th and Williamson," a nod to Joshua Williamson, who has been writing The Flash comics since the DC relaunch in 2016.
- Nora reveals that she wants herself and the Young Rogues to break into 'McCulloch Technologies'. In the comics, Evan McCulloch is a professional assassin, who ultimately takes on the mantle of Mirror Master after Sam Scudder.
- The Young Rogues attempt to get Cisco to hack Spencer Young's dark matter cell phone so that they could use it. Cisco has a rather amusing outlook on the whole ordeal, joking that he's gone through a similar sort of kidnapping before, and that it makes the new group of villains feel like a "rogues cover band," a reference to "" where Cisco was kidnapped by Leonard Snart, Mick Rory, and Lisa Snart, in an attempt to get him to build them a new Cold gun, a new Heat gun, and a Gold gun, respectively.
- Nora creates a fake ID to get into the McCulloch building, using the alias "Jenni Ognats". In the comics, Jenni is the young woman who holds the mantle of XS, as a speedster who also serves as part of the Legion of Super-Heroes.
- After Sherloque breaks out of the reinforcements, Cisco asks how he was able to do that so easily, Sherloque reveals that he was trained by the 'Thaddeus Brown of Earth-51.' In the comics, Thaddeus is a famous escape artist, who operated under the stage name of "Mister Miracle". Shortly before dying at the hands of Intergang, Thaddeus served as a mentor to Scott Free, who became the superhero Mister Miracle in his memory.
- Ralph assumes that Caitlin is making a move on him, only for her to act with disgust over the notion, a nod to how in Season 4, Ralph was meant to be Caitlin's love interest only for Danielle Panabaker to veto the idea.
- After Iris knocks out Merkel she remarks that he's lucky she doesn't throw him off a building, a reference to "", when Merkel did that to Barry and Iris jumped down after him to unlock the meta-cuffs Barry had been wearing at the time.
- Ralph mentions Greys Anatomy to Caitlin. Caitlin's actress, Danielle Panabaker, appeared in an episode of the series.
- Chris Klein (Orlin Dwyer) returns to the main cast in this episode after not being credited or appearing since Orlin died in "".
- Cisco makes a reference to the television show Sex and the City, calling his satellites Carrie, Samantha, Miranda and Charlotte.
- Cisco refers to Team Flash's (previously DeVoe's) four satellites as Carrie, Charlotte, Miranda, and Samantha. However, when he first hacked into these satellites in "", he'd named them Hal, Data, Robbie, and Colossus.
- It's highly possible he renamed them once they got fixed.
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