Bronzong is a large Pokémon resembling a blue-green bell with two arms coming out of its sides. It has a hollow body and a yoke attached at the top. Its face can be best described as being a "Totem Pole" design; Bronzong has two round, red eyes with blue-green irises and a rectangular mouth with one visible row of square teeth. It has several darker, rectangular markings on its body. When angered, Bronzong lets out a warning cry that rings out like the tolling of a bell. It can summon rain clouds, which earned it the nickname "bringer of plentiful harvests". The first known Bronzong was dug up at a construction site.
Prior to Gen VIII, Bronzong was the only Pokémon able to learn Rain Dance by leveling up that could not learn any moves nor have any Abilities that benefit from rain. This may be related to its Pokédex entries, several of which mention Bronzong's natural power to summon rain clouds.
Bronzong is based on a dōtaku, Japanese bells which were believed to have been used to pray for good harvests. They are often decorated with patterns representing nature and were buried, occasionally with bronze mirrors and weapons, in isolated locations.
Bronzong and the fact that it evolves from Bronzor also seems to be based on an old Japanese myth present in the book Kwaidan: Stories and Studies of Strange Things by Lafcadio Hearn. The priests of Mugenyama wanted to forge a bell for their temple, so they asked the local women to donate their bronze mirrors for this purpose. A woman contributed her mirror, but later regretted it. Because of her repentance, the mirror wouldn't melt in the furnace until she killed herself. Before her suicide, she said that whoever would break the bell would be given great wealth by her ghost. A multitude of people tried to break the bell by ringing it furiously, so the tired priests managed to roll it down a hill into a swamp.
Additionally, Bronzong's facial features resemble those of the Mesoamerican rain god Tlāloc, who is often depicted as being predominantly cyan in color. In Mexico City, which is located on the site of the former capital of the Aztec Empire, artifacts are often discovered during construction-related excavation, which Bronzong's Pokédex entry in Pokémon Diamond may reference.
Bronzong is a combination of bronze and gong (a type of musical percussion instrument), dong (onomatopoeia for deep bell reverberation), or bianzhong (an ancient Chinese musical instrument consisting of bells).
Dohtakun is a combination of 銅鐸 dōtaku (a type of bronze bell) and どんどん dondon (onomatopoeia for drumming).