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This will be the first incarnation of Rodan to appear in an American-made film.
Rodan's Japanese name, Radon, is a truncation of "Pteranodon." It may also have been chosen to suggest radiation. The name was changed to "Rodan" in English-speaking markets, possibly to avoid confusion with the element Radon. Toho eventually trademarked the name "Rodan," making it the monster's official English name.
According to Monarch, Rodan is referred to in some legends as the "Fire Demon" and "The One Born of Fire."  Monarch's Titan designation for Rodan is Titanus Rodan, which unlike the designations for Godzilla and Mothra utilizes his English name rather than his Japanese name.
The MonsterVerse Rodan is a giant pterosaur-like creature with a large beak, two horns protruding from the back of his head, and huge wings with molten rock trailing off their edges. Rows of spikes adorn his chest, and his tail is large, flat and fan-shaped. His body is a burgundy red color, while his beak is black.
According to Godzilla: King of the Monsters director Michael Dougherty, "Rodan is a bit of a rogue...you never quite know where his loyalties lie." Monarch describes Rodan's behavior as that of a "destroyer," unleashing "airborne devastation" upon the natural world.
Rodan's origins are unclear, but he is presumably an ancient creature, due to being depicted in what appears to be an ancient cave painting. Similar paintings exist of Godzilla, Mothra and King Ghidorah, suggesting Rodan either appeared alongside them in the past or is prophesied to appear alongside them in the future. According to Monarch, Rodan is spoken of in legends, with his name referenced within many ancient temples in volcanically active regions. In 1991, Rodan was discovered by Monarch in pyrostasis in the magma inside the Isla de Mara volcano in Mexico. Monarch notes that Rodan's body structure resembles that of Pteranodon, although he is far larger.
After their adventure on Skull Island, Monarch members Houston Brooks and Lin San showed James Conrad and Mason Weaver a cave painting of Rodan, along with paintings depicting Godzilla, Mothra and King Ghidorah, as proof that the inhabitants of Skull Island were not the only monsters in the world.
Rodan can fly at supersonic speeds sufficient to outmaneuver fighter jets, and is highly agile while flying. Rodan is shown destroying several fighter jets pursuing him by rolling while in flight and smashing them with his wings. When flying at top speed, Rodan's wings generate cyclonic drift streams that can level entire cities instantly by literally ripping structures out of the ground and into the air.
Rodan produces destructive shockwaves, described by Monarch as "cyclonic drift streams," while flying at top speeds which can flatten buildings he passes over and launch debris such as vehicles and people into the air. Monarch scientists speculate the monster's wingspan is vast enough to level cities with this technique.
Rodan has an extreme tolerance to heat and magma, having hibernated inside a volcano for at least several decades. He is also completely immune to conventional weaponry such as gunfire or missile strikes. A layer of volcanic rock acts as armor plating for Rodan's wings.
Rodan has an internal combustion system of magma that flows throughout his body.
- Main article: Rodan/Gallery.
- The Monarch outpost where Rodan is being studied is Outpost 56, a reference to the release year of his debut film, 1956.
- The nickname given to the location where Rodan is found, "el nido del demonio," is Spanish for "the demon's nest."
- Originally, the Mexican volcano in which Monarch discovered Rodan was named Isla de Mona, which is the name of a real island in the Puerto Rican archipelago. The name was eventually changed to Isla de Mara.
- The MonsterVerse Rodan is the shortest incarnation of the character, yet is also the heaviest and has the widest wingspan.
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