Iron Moth is very similar to Volcarona in appearance, resembling a robotic moth. It has four small "feet", red compound eyes, red horns on the sides of its head, and white armor plating covering its thorax. Its abdomen is black and light blue with two black diamond spots on the outside. It has six diamond-shaped wings that are mostly orange with white speckles and a single black triangle marking, which levitate a short distance away from its body.
In an article from an August issue of Occulture magazine, it is said that the name Iron Moth was borrowed from that of a flying object described in the Violet Book. Iron Moth is said to resemble Volcarona, and it would descend from the skies, following people around and occasionally attacking them. Some point to Iron Moth's aggression as evidence supporting that it may be a UFO controlled by alien life. It is speculated that something out there may be using Iron Moth to observe the people of the Pokémon world in preparation for an invasion. In the TCG, it was shown to be capable of sending its "legs" flying by themselves independently of its body. It has been seen releasing attacks from its connected wings like a cannon. While asleep, it turns itself off, connecting its wings to its back and causing the energy on its wings to disappear, making them black.
Iron Moth and Slither Wing can be considered counterparts of one another.
Both share one type with Volcarona, but neither share the same type with each other.
Both are the first Paradox Pokémon used by the AI Professors in their battles with the player.
Iron Moth has the highest base Special Attack stat of all Paradox Pokémon.
Iron Moth is the only Paradox Pokémon to not share at least one type with another Paradox Pokémon.
Iron Moth is based on Volcarona. Its descriptions in the Pokédex and the Occulture magazine suggest it is based on a UFO, specifically a foo fighter, a type of UFO which was often described as a ball of fire, and whose name may have come from a corruption of the French word feu, meaning fire. Its appearance may also be based on satellites and space telescopes, particularly the James Webb Space Telescope, while its wings resemble solar panels or LED displays.
Iron Moth may come from the words iron and moth.
Tetsunodokuga can be taken literally as 鉄の毒蛾 tetsu no dokuga (iron venomous moth).