Citizen Steel (CW)
Real name: Nate Heywood
Full name: Nathaniel Heywood
Aliases: Steel, Citizen Steel
Creator: DC Comics
Alignment: Good
First appearance: DC's Legends of Tomorrow Season 2: Episode 1
Place of birth: Earth-1
Occupation: Historian, Adventurer, Agent of the Time Bureau
Base: Washington, D.C.
Relatives: Henry Heywood (paternal grandfather, deceased), Bettie Heywood (paternal grandmother), Violet (maternal grandmother), Hank Heywood, Jr. (father), Dorothy Heywood (mother)
Gender: Male
Race: Metahuman
Height: 6'0" • 183 cm
Weight: 378 lb • 170 kg
Eye color: Brown
Hair color: Brown
Superpowers: Accelerated Healing, Agility, Cold Resistance, Durability, Fire Resistance, Heat Resistance, Intelligence, Intuitive aptitude, Invulnerability, Jump, Marksmanship, Natural Armor, Omnilingualism, Stamina, Super Strength
Stats: intelligence 95, strength 90, speed 35, durability 100, power 70, combat 80

History:
Dr. Nathaniel "Nate" Heywood is a historian, specializing in deductive historical reconstruction. He is the son of Hank and Dorothy Heywood, the grandson of Henry Heywood, the best friend of Ray Palmer, and the ex-boyfriend of Masako Yamashiro and Amaya Jiwe. Due to his skills, Nate was able to deduce that an aberration-created reality, one in which the Nazis nuked New York City in 1942 (due to the machinations of Damien Darhk and Eobard Thawne) and World War II continued until 1947, was starting to cement in the timeline, supplanting the previous reality. With the help of Oliver Queen, he was able to locate the submerged Waverider in 2016, waking Mick Rory from time stasis. Together with Mick, Nate traveled through time, using his skills as a historian to find the locations and time periods in which different members of the Legends team were stranded. For his support, Nate was made a new member of the team. After being injected with a biomolecular enhancer created by Eobard Thawne and modified by Ray Palmer, Nate gained the ability to transform his skin into steel, making him extremely strong and resilient. After Nate learned to use his abilities, Ray gave him a suit and the alter ego "Steel" (after his grandfather, Commander Steel). Among the other nicknames he suggested himself were Corporal Steel, Mr. Steel and Citizen Steel, and he's also referred to himself as the Man of Steel and Steel Man. After his breakup with Amaya, Nate left the Waverider to recover and focus on himself. He soon received and accepted a new job at the Time Bureau, where he now runs the new magic department.

Powers:
 As a result of Eobard Thawne's biomolecular enhancer that Ray altered and injected into Nate, he gained the ability to transform his entire body into steel, though Ray claims that it is actually an organic form of alloy. In this state, his body increases somewhat in height and build. Despite being entirely constituted of steel in his altered state, Nate appears to retain his normal level of mobility, leaving his agility unhindered.  A bonus effect of the biomolecular enhancer cured Nate's hemophilia. To which, Nate's enhanced body is able to recover from injuries much faster than a normal person. Even a direct hit to his chest by the A.T.O.M. Exosuit's blasters only knocked him out for a minute before he somewhat recovered shortly afterwards. Upon transforming, any injuries his body has sustained fully heal immediately.  While transformed, Nate is far more durable than any normal human, approximately 100 times stronger than steel, according to Ray. This makes him extremely resistant to injury from low to high-caliber bullets, landmines, knives and even ion blasts from Ray's A.T.O.M. Exosuit and super-accelerated hits from the Reverse-Flash. He could also survive falls from great heights, such as when he fell from the Temporal zone, through the skies, and eventually crashed into solid ground in Feudal Japan while showing no physical injury. Nate's durability is not without limits as he can be affected by bullets or any weapons molded from Dwarf star alloy and possibly any metal/steel strong enough to penetrate his body.  Nate is far stronger than any normal human, with his physical at least quintupled from it's normal level as stated by Ray. He was able to overpower Vixen, who was channeling the spiritual might of a gorilla, with ease and go toe-to-toe against Ray and his A.T.O.M. Exosuit. He is strong enough to lift and fling a full-grown man and even a Dominator like a rag doll, also knocking one out with a single punch (whereas Supergirl had difficulty doing so). His strength was further tested when he tried to stop a train carrying eight boxcars of Dwarf star alloy, which was moving at full speed, and was able to slow its momentum until it completely stopped in its tracks, equaling to 320 tons total including the locomotive.  Nate seems to be able to sense changes in the timeline or reality itself, as shown when he detected changes to the past, such as New York City being nuked by Nazis in 1942, causing World War Two to last until 1947, and when the Legion of Doom changed reality using the Spear of Destiny, he knew someone had "operated" on reality.   Nate is a very intelligent individual, being an accomplished and resourceful historian, priding himself on deduction. With his deduction skills and extensive work with sources, Nate deduced the identities of Green Arrow and Rip Hunter's Legends, as well as the locations of time-scattered members of the Legends throughout history. Nate is very observant and sharp-witted, able to recognize that the timeline was starting to change due to aberrations, despite previously not being acquainted with the mechanics of time travel. He immediately thought to bring his findings to Oliver, the Green Arrow and mayor of Star City, requesting assistance with saving the them. Nate's talents for deductive reasoning and analysis proved their worth even in the Legion of Doom's rewritten reality, where he soon realized how the world had been unnaturally altered.  Nate has been proven to be very adept with machinery. After learning about how time travel works, he was able to design an alarm system to detect aberrations in the timeline.  Nate is fluent in English, German, French, Japanese, Italian, and Latin.  Since joining the Legends, Nate has begun sparring with his companions (especially with Ray) to better his combat skills. Despite not being as skilled as the other Legends, especially compared to Sara, Mick, or Amaya, Nate can hold his own in a fistfight, partly because of his powers. Nate's style of fighting is mostly that of a brawler mixed with basic boxing, which he most likely learned from Ray.  Nate fought decently with a rifle while undercover in the Vietnam War with Mick Rory.  Nate has proven decent at fighting with blades, as he used the blade of a paper cutter to fight and defeat a magical plant creature that Gary had accidentally brought to the Time Bureau.