Is Tiamat a dragon or a Hydra?
The Chaldean dragon Tiamat had four legs, a scaly body, and wings, whereas the biblical dragon of Revelation, “the old serpent,” was many-headed like the Greek Hydra. Because they not only possessed both protective and terror-inspiring qualities but also had decorative effigies, dragons were early used as warlike…
Tiamat, a Babylonian personification of saltwater who is generally depicted as a dragon, created the first gods out of her union with Apsu, the personification of freshwater. According to the Enuma Elish, the Babylonian creation epic, she was eventually destroyed by the god Marduk, who split her body in half.
Tiamat is usually described as a sea serpent or dragon, although Assyriologist Alexander Heidel disagreed with this identification and argued that "dragon form can not be imputed to Tiamat with certainty".
In most Dungeons & Dragons campaign settings, however, Tiamat is the five-headed queen of the evil chromatic dragons. She has one head for each customary color of chromatic dragon (black, blue, green, red, white), and each head has the powers of a member of the respective race of dragonkind.
Hydra, like Ouroboros, can take on the initial traits and characteristics of any other Dragon Type or Dragon Species. Hydra is a separate Dragon Type because of the additional physical characteristic, the most common of which is multiple heads. Some Hydras present with additional tails, arms, or wings.
She dwells in Avernus, the first layer of the Outer Plane of Baator (also known as the Nine Hells). The first edition of Advanced Dungeons & Dragons named her as the ruler of Avernus; later editions reserved the rulership of the layers of Baator for powerful baatezu (devils).
Tiamat is the evil deity of wealth, greed, and envy, and the patron of chromatic dragons. She urges her followers to take vengeance for every slight. Most chromatic dragons that worship a deity worship Tiamat.
Tiamat assembled an army of dragons and monsters led by the god Qingu, but Marduk overcame these fearsome forces. He commanded the wind to enter Tiamat's mouth and puff up her body. He then killed her with an arrow that split her into two halves.
Apsu was one of the oldest gods along with his wife Tiamat. He was sent to sleep by the god Ea and became the freshwater ocean on which the earth was believed to float. Apsu became the home of Ea.
Tiamat was a primordial goddess in ancient Mesopotamian mythology. She was viewed as the mother of the many gods of the Mesopotamian pantheon. Tiamat was believed to symbolize saltwater, the oceans, and the seas. Tiamat created the gods with her consort Apsu.
Who did Tiamat give birth?
She then gives birth to the eleven monsters, known as Tiamat's Creatures, who will help her fight against the younger gods: Musmahhu, Usumgallu, Basmu – three horned snakes, Furious, Exalted, and Venomous. Umu-dabrutu – a raging storm. Mushussu – a snake-dragon.
Tiamat was an ancient goddess of salt waters and chaos, or disorder. She is mentioned in the Babylonian (pronounced bab-uh-LOH-nee-uhn) creation story called the Enuma Elish , found inscribed on clay tablets dating back to around 1100 bce.

It looks like Bahamut is significantly stronger than Tiamat, and when adjusted for 5e, would probably be CR 33~35. The Gaseous Form breath would straight up stun and turn every affected creature into harmless gas for 3 minutes.
4/10 Tiamat
Tiamat is one of the most powerful bosses in Dungeons and Dragons and appears in several settings, like the Dragonlance. According to the Draconomicon—Chromatic Dragons, Tiamat possesses several abilities that Bahamut does not. She has over 1,600 hit points and possesses more resistances than her brother.
Three Spot (Blue) Gouramis are particularly voracious consumers of Hydra. Paradise fish and Mollies are also very fond of eating Hydra. Even pond snails will gobble them up. If adding fish or snails isn't an option for you, heat can also be used.
Hydra, also called the Lernean Hydra, in Greek legend, the offspring of Typhon and Echidna (according to the early Greek poet Hesiod's Theogony), a gigantic water-snake-like monster with nine heads (the number varies), one of which was immortal.
Hydra can be either hermaphroditic (having both male and female sex organs) or be separate sexes. Eggs formed by female hydras are left attached to the hydra exposed, while sperm from the male is released into the water for fertilization.
Bahamut is a child of the dragon god Io, and a fierce enemy of Tiamat, his evil sister and twin.
Anu fought Tiamat and her demons and defeated them. He hit Tiamat's head with the club and killed her, dividing Tiamat's corpse into two and creating heaven and earth from her ribs.
Tiamat -5 Heads with 4 Wings - Lord of the Print D&D, Dungeons and Dragons, resin miniatures, miniature painting, RPG, TTRPG, fantasy art.
What did Tiamat turn into Marvel?
The Eternals only managed to kill him after they united cosmic energy with Tiamut to form Uni-Mind.
Tiamat (pronounced tee-a-maht), also known as the Nemesis of the Gods, was the queen of evil dragons and a servant of the greater god Bane. Like most other draconic deities, she was the offspring of the dragon creator deity Io.
Divine Genealogy and Syncretisms. In Enūma Eliš TT , Tiamat is the mother of all the gods (Tablet I, line 4). Together with Abzu TT she creates Lahmu and Lahamu, who in turn beget Anšar and Kišar. Though one cannot point to a syncretism as such, there are several models for Tiamat in the earlier mythology.
Tiamut, better known as the Dreaming Celestial, was a fabled Celestial who was put to sleep and sealed under the Diablo Mountains by his fellow Celestials of the Earth's Second Host. For roughly 20,000 years, he slumbered and his armor became black, until he was awoken in modern times, golden once more.
A: The gargantuan Tiamet is 14 inches tall, and with a wingspan over 28 inches long.
The gods agree, a battle ensues, and Marduk vanquishes Tiamat and Qingu, her host. Marduk then uses Tiamat's carcass for the purpose of creation. He splits her in half, “like a dried fish,” and places one part on high to become the heavens, the other half to be the earth.
Bahamut has better stats across the board. Both are Divine Rank 10, so all of the godly qualities are basically identical. It looks like Bahamut is significantly stronger than Tiamat, and when adjusted for 5e, would probably be CR 33~35.
This pairing of Tiamat and Bahamut as the antithesis of each other has since recurred in other fantasy settings. In both the original Final Fantasy and Final Fantasy VIII, Bahamut is portrayed as benevolent, while Tiamat is portrayed as malevolent, keeping close to their origins in D&D.
Tiamat was a goddess of the sea who existed at the beginning of time. Her husband was Apsu, the god of underground freshwater, with whom she created other gods.