This article is about the conjoint meta-human that is the result of the fusion between Ronnie Raymond and Martin Stein, or Jefferson Jackson and Martin Stein. For the individual characters, see Ronnie Raymond, Martin Stein, or Jefferson Jackson. For the project, see F.I.R.E.S.T.O.R.M.. For the Earth 2 version of Firestorm see Deathstorm

Firestorm is a gestalt meta-human, originally formed by Ronnie Raymond and Martin Stein when they were caught in the S.T.A.R. Labs particle accelerator explosion. The two were inextricably linked, and after Ronnie's death, Martin's health deteriorated; Barry and his team were able to track down Jefferson Jackson, who replaced Ronnie as the half of Firestorm.


On December 11, 2013, Ronnie Raymond was caught in the blast caused by the S.T.A.R. Labs particle accelerator. He was transported along with many previously theoretical particles outside, meeting with Professor Martin Stein, who at the time held a mysterious object relating to his F.I.R.E.S.T.O.R.M. transmutation project. They were then merged in to one person, but due to their unwillingness, Stein's mind took control of Ronnie's body (later described as an example of 'Darwinism', with Stein's superior mind controlling Ronnie's superior body), while Ronnie's mind was suppressed, causing Stein to feel identifiably schizophrenic.[1] With Stein in control, he tried to return to his former home to find his wife, Clarissa. However, due to his appearance as Ronnie Raymond, she didn't recognize him and attempted to call the police, before fleeing.[2]

For the following 10 months, Stein chose to live under a bridge and scavenge through garbage to survive.[3] He frequently began making use of his pyrokinetic powers, described as onlookers as a "burning man". One night, he was accosted by two muggers, who taunted him for appearing cold. He got up and displayed his powers, assuring that he wasn't cold.[4]

A few days before Christmas, Firestorm, likely under the direction of Ronnie, followed Ronnie's fiancée, Caitlin Snow, to the Central City Mall garage. He approached her as she was getting into her car, but ran away when she noticed him. Caitlin caught up to Firestorm, but, unwilling to face her, he covered his hands and head in flames to scare her off and escaped the garage. Later, Caitlin found him with the help of Cisco Ramon by following the ionized particles Firestorm emitted. When Caitlin tried to talk to him, he denied that he was Ronnie Raymond and warned her to get away. Caitlin insisted the need to take him to S.T.A.R. Labs to remind him of his identity, causing him to take her face in his hands and whisper "Firestorm". He distracted the two of them with flames and promptly escaped. That night, Firestorm arrived outside S.T.A.R. Labs, right as The Flash was fighting the Reverse-Flash. He saved The Flash, shooting flames at the Reverse-Flash. When the Reverse-Flash escaped, Ronnie warned Caitlin not to look for him, before flying off by propelling himself with flames.[5] Some months following, Stein approached Quentin Quale, an old friend of his. He claimed to be looking for help, but Quale hardly recognized him due to his new appearance, and he accidentally lost control of his powers, burning the physicist. Deciding to stake out Stein's wife's house, Dr. Wells and Caitlin waited for Firestorm to appear again. When he did, he was confronted by The Flash, whom he easily defeated by flying into the air and forcing him to drop. When Firestorm was about to strike down Barry, he saw Caitlin and fled. However, Barry had planted a tracking device on Firestorm and was able to find him again. With Clarissa's help, the team convinced Firestorm to go with them for treatment. Wells and Caitlin stabilized Firestorm's mind with a drug cocktail used for dissociative personality disorders. At this point, Stein's personality was dominant, with Ronnie's dormant, although Stein did have knowledge of Ronnie's memories and some of his feelings, including his love for Caitlin. When Wells discovered that Firestorm's body was destabilizing and would soon disintegrate in a massive nuclear explosion, Firestorm decided to isolate himself at a location far away from Central City to avoid harming anyone. Barry and Caitlin arrived with a quantum splicer, which they hoped would harmlessly separate Ronnie and Professor Stein while preventing the explosion. Caitlin activated the splicer, but a huge blast of energy was released from Firestorm's body, engulfing the area.[2]

Stein and Ronnie willingly merge together

Ronnie and Stein willingly merge together.

Fortunately, though creating a giant explosion, Ronnie and Professor Stein were separated, causing no nuclear residue. For a time, Professor Stein and Ronnie attempted to go their separate ways. However, they soon found themselves being connected and drawn back together. The S.T.A.R. Labs team was able to track down a kidnapped Stein, and in order to defeat General Eiling, Ronnie and Professor Stein decided to make peace with each other and willingly merge back together, giving Ronnie control but allowing Stein to have a voice within. Before Firestorm could knock Eiling down, however, he released an ion grenade, causing the Firestorm Matrix to destabilize momentarily and knock Ronnie down. As Eiling aimed a gun at Firestorm, The Flash quickly intercepted and knocked him to the ground. Initially about to hurt General Eiling, Barry suggested that they head home together, which Ronnie accepted. Back at S.T.A.R. Labs, Barry suggested that Stein and Ronnie try to separate. Trying hard, they were able to succeed. They headed back to Stein's home, where Ronnie and Martin bid their farewells to Caitlin and Clarissa, respectively, telling of their plan to go to Pittsburgh for more information on their condition. Outside, they merged back in to one, expressed their love and flew off.[3]

The Flash, Firestorm, and The Arrow stand over a defeated Reverse-Flash

Flash, Arrow and Firestorm defeat Reverse-Flash

Later when Barry realized he was too slow for the Reverse-Flash, who was really Dr. Wells but was also really Eobard Thawne impersonating the late doctor, he called Firestorm and Oliver Queen/Arrow to help him in his upcoming fight against him. When Eobard arrived at S.T.A.R. Labs to use the particle accelerator the Flash confronted him and Firestorm and Arrow soon joined him, but Eobard was unimpressed and fought all 3 of them. When Flash was down Firestorm distracted Reverse-Flash so Arrow could shoot him with a special arrow to disable his speed, but Reverse-Flash rotated his arm at super speed, sending Firestorm blocks away. Flash quickly recovered him and stopped him falling to his death and resumed the fight shooting a massive ball of fire at Reverse-Flash atop S.T.A.R. Labs when Flash lead him up there, causing him to fall on a car where Arrow finally finished him off with an arrow and made him pass out. Having succeeded Arrow and Firestorm left as Flash secured Reverse-Flash. [6]

After Flash stabilized the singularity caused by Eobard's manipulations Ronnie and Stein merged into Firestorm once more, intended to separate inside the singularity so the energy released would destroy it. Firestorm flew up to the portal as Flash ran around the portal to keep it stabilized and Firestorm separated as intended and the energy indeed destroyed the wormhole. Unfortunately Ronnie and the Professor weren't able to re-merge in time and Ronnie was killed while Flash barely saved Professor Stein, essentially destroying the Firestorm matrix and thus Firestorm itself. [7]

The instability of Stein's molecules from a long period without merging put him in critical condition and forced the team to search for a compatible partner, narrowing it down to scientist Henry Hewitt and mechanic Jax Jackson. Hewitt, who had been chosen by Caitlin Snow, failed to merge with Stein and became angered at her false hope. Jax initially refused to help out but changed his mind after Caitlin told him the story of how Ronnie died a hero by stopping the singularity and an attack by Hewitt at the repair shop where Jax worked. Jax successfully merged with Stein as Firestorm and helped Barry stop Hewitt at Jax's alma mater. Jax and Stein then departed to better understand their power and unlock new abilities that weren't touched on when Ronnie was alive. [8]


The personality of Firestorm is determined by the manner of how the individuals merged. If the individuals merged while fighting it, they result in an unstable form. While the more intellectual mind is in control, they still feel the consciousness of the other mind weighing on them. They also are unable to control their powers properly.

When merged while accepting the merge, both minds are consciously communicating with each other with the youthful mind in control of the body while the older mind can give advice to the youthful mind and guide them.

Powers and abilities


  • Nuclear/Meta-human physiology: Firestorm gets his powers from the nuclear energy his body creates. This energy is the source of his pyrokinetic powers. It can also be speculated that Firestorm could in fact transmute atomic bonds but has yet to demonstrate it.
    • Dual host/Transformation: The F.I.R.E.S.T.O.R.M. Matrix are controlled by two individuals, or “halves”; when they achieve physical contact, the Matrix takes over their biology and merges them into a singular being.
      • Psychic link: When the two halves of Firestorm are split, they maintain a mental link, allowing them to feel when the other is in pain or is hysterical, for instance. The closer proximity they are to one another and the longer they have been separated, the stronger the link appears to become.
      • Darwinian physiology: When the two halves of Firestorm merge, the Matrix has them take on the form of the individual that has the stronger body. The half who originally possesses the aforementioned form often serves as the “driver”, with the other half serving as a “co-pilot” or “mental advisor”.
    • Nucleokinesis: Firestorm is virtually a living reactor, and as such, creates great amounts of nuclear energy via the innumerous atomic reactions constantly occurring in his body. That and his mental capacity to process both fission and fusion, allow him to harness the energy emitting from his either his own body and/or any near source of energy that’s near.
      • Nuclear Pyrokinesis: The amount of energy being processed in his body is often released through his head and hands. He can use his control over the energy to project it willingly in the form of concussive blasts, in the form of fire. These “nuclear blasts” are often shown to be quite powerful and have shown to be able to knock unarmed humans out unconscious and are hot enough to burn through solid structures and even cause harm to meta-humans (such as Vandal Savage and Reverse-Flash).
      • Flight: Firestorm has so far seen to have at least two methods to achieve flight. The first and most common is when he uses fires nuclear blasts downward at a consistent rate, thereby defying generating enough force to defy gravity and allow for stable prolusion and gliding. This flight style is his preferred and most practiced choice. The second method is unclear, as he is shown to be able to fly at impressive speeds without the need of his blasts. How he achieved this skill or how he even does it is unclear.
      • Nuclear absorption: Firestorm has shown the ability to not only generate nuclear power, but also contain the energy coming from outside sources by absorbing its output. He did so when he absorbed the blast from Vandal Savage’s nuclear warhead.


  • Ionized radiation: The Firestorm Matrix can be destabilized by bombarding its cellular structure with ionized radiation, temporarily disabling Firestorm's powers and weakening him.
  • Intense wind: While Firestorm is on fire, he is extremely vulnerable to sheer wind as exposed by Eobard Thawne.
  • Prolonged Separation: Because Firestorm is made of two separate metahumans combined together, prolonged separation from each other will eventually take a negative toll on their health, require them to merge periodically.


  • Quantum splicer: Originally the Tachyon prototype was used by Eobard Thawne to recharge his speed, he ultimately chose to turn it into a Quantum splicer to help separate Firestorm so they would not go nuclear.[2] While the separation was successful it was found that the device could also be used to remerge the two into Firestorm should the need arise.[3] Originally Jax had to place the splicer on his chest before he and Stein would be able to merge, however it appears that they are now able to merge successfully without it. The splicer is still present on the Firestorm suit.[9]
  • Firestorm suit: It appears that in the intervening time between when they left for Pittsburgh and when they join with Rip Hunter, Jax and Stein have started wearing a suit while merged as Firestorm. The suit contains a color scheme for bright yellow and orange and still includes the quantum splicer on the chest. It is unknown at this time where the suit came from or what it is made of, since it only appears when the two are merged.[10]


The Flash

Season 1

Season 2

DC's Legends of Tomorrow

Season 1


  • The quantum splicer's shape (an abstract atom) is a reference to Firestorm's logo, worn on his chest in the DC comics.
  • Firestorm's promotional logo is the shape of the door to the S.T.A.R. Labs particle accelerator.


Promotional Images

The Flash

Season 1

DC's Legends of Tomorrow

Season 1


  1. "Crazy for You"
  2. 2.0 2.1 2.2 "The Nuclear Man"
  3. 3.0 3.1 3.2 "Fallout"
  4. "Flash vs. Arrow"
  5. "The Man in the Yellow Suit"
  6. "Rogue Air"
  7. "The Man Who Saved Central City"
  8. "The Fury of Firestorm"
  9. "Pilot, Part 1"
  10. "Pilot, Part 1"
Community content is available under CC-BY-SA unless otherwise noted.