List of DC Comics characters: R

Reverb and Rupture appear as separate characters in The Flash live action television series:

• Reverb is the Earth-2 doppelgänger of Vibe (portrayed by Carlos Valdes). Depicted as Zoom's enforcer on Earth-2, Reverb is a wrangler of Killer Frost and Deathstorm, while trying to persuade Vibe to his side before being killed by Zoom for his disobedience.
• Rupture is the Earth-2 doppelgänger of Dante Ramon (portrayed by Nicholas Gonzalez). During Zoom's invasion of Earth-1, Rupture attacks Vibe and Dante out of revenge for Reverb's death (as Zoom lied to him about Reverb's murder), but is stopped by the Flash and Vibe before being killed by Zoom for his failure.

Dante Ramon appears in The Flash live action television series, portrayed by Nicholas Gonzalez. Taking Armando Ramon's place as the older brother, this version has a rocky relationship with Cisco Ramon. In season one, he and Cisco are held hostage by Captain Cold and Heat Wave to motivate Cisco to reveal Flash's secret identity which Cisco does for Dante's sake. In season two, Dante and Cisco fend off Rupture's attacks which resulted in a better brotherly bond. In season three, Dante is killed in a car accident after Barry Allen's timeline changes which strained Cisco and Barry's friendship for a while.

Red Tool does not feel pain after a surgery that removed a brain tumor and parts of his amygdala. Red Tool uses tools and hardware appliances for weapons and has a bionic arm.

• Reign appeared in the Arrowverse series Supergirl, portrayed by Odette Annable and served as one of the main antagonists of season 3 (along with her Kryptonian creator Selena) under her human alias Samantha Arias, a single mother in National City who has a daughter Ruby. Selena and her sisters created Reign and other Worldkillers (Purity and Pestilence) during the final days of Krypton. Launched on another planet Earth, Reign becomes dormant until Selena awakened her when Samantha is adult person. Samantha is initially unaware of her origins until her adopted mother Patricia explains to her when she was in space pod; the latter sends the signal which leads Samantha to desert location where the hidden Fortress of Sanctuary emerges. Samantha finds Selena's holographic projection and her evil personality emerges, unable to suppress her and no having memories of her. Selena instructs her to become an agent of justice to purify Earth and transform it into the new Krypton. Reign kills several people on her way, both good and evil in her rampage until she is stopped when Supergirl puts the black Kryptonite Harun-El from Argo City in her organism, seemingly perishing her and saving Samantha. Selena and her sisters resurrect Reign as a separate being, without her host, but Reign is finally killed in alternate dimension Juru when Samantha gives her the water from the fountain of Lillith, weakening her and prompting Kryptonian demons to take her away. Reign returned in the 100th episode of season 5 titled "It's Super Life". In one reality shown by Mister Mxyzptlk, Reign killed Lena Luthor and Mon-El. In another reality, Reign became Lena Luthor's enforcer.
• Reign appears as a playable character in Lego DC Super-Villains.

Alberto Reyes appears in the animated film Teen Titans: The Judas Contract, voiced by David Zayas.

Bianca Reyes appears in the animated film Teen Titans: The Judas Contract, voiced by Maria Canals-Barrera.

U.N.I.O.N. – A union of nanobots that can concentrate themselves into "one" single massive robot or "disperse" themselves in order to infiltrate other machines. Later inhabited the body of a robot duplicate of T. O. Morrow, and though repeated requests to be exposed to the Karmarak's radiation to escape it, he was denied it by the Metal Men as the same radiation would have reawakened the Death Metal Men.

Warbox – The walking Arsenal. Its head is shaped like a bear's. A reel-to-reel tape player is attached to its chest (it says it "can't fight without music"). L-Ron implies he was commissioned for a Japanese singer.

Body X – A mechanical brain in a living woman's body. It sacrificed the woman's body in Metal Men (vol. 3) #3 in order to destroy the Death Metal Men.

L-Ron – Alien robot – formerly a heroic ally to the Justice League, now standing against humanity for unknown reasons.

Manhunter Lud – Part of the proto peacekeepers of the universe, the Manhunters, he has an eyepatch over his right eye. Later revealed to be an agent of The Nameless, covering the Nameless' signature Eye of Ra emblem under his eyepatch.