The Legend of the Golden Tyrant

The legend of the golden tyrant is a common folktale shared among many civilizations. It's especially popular in Luxtamare and Nocturn, especially humans.

Summary
The shortest summary of the legend possible is:

Back when dragons ruled the world, one of the kingdoms in the west was ruled by a dragon known only as "The Golden Tyrant." He enslaved elves and humans. The gods disguised a human child as a dragon and he took the child in. Eventually, the child grew up and learned the truth, and went to war with his father. The Golden Tyrant killed his own son, and for his hubris was punished by being transformed into a human himself.

Variations
There are many variations of this story, depending on where its told and who is telling it. The myth is not that prominent in other cultures.
 * In Luxtamare, its believed that after he was turned into a human, the golden tyrant was killed by his own court, for they thought the human killed their king.
 * In Vala, he then rose up and killed the other dragons in order to gain the human's trust. The elves then say the humans foolishly believed him and then he wiped them out until the elves rose up and killed him with the first dragon bane sword. Humans believe they created the first dragon bane sword and did it themselves.
 * In Nocturn, they believe the golden tyrant never died and walks among them as a beggar, trapped in an immortal body until he learns the value of human life.
 * In Mixcoatl, they believe he became one of the monsters that try to eat souls on their journey to the afterlife.

Historical Accuracy
Archeology is a big fad in Nocturn right now, and because of that, this story is popular to debate among high elves and humans alike. Some historians are skeptical of the whole thing as there is no name for The Golden Tyrant, and no records they found in draconic ruins seem to imply any event like this. There's not really even a solid date.

The other thing that makes Nocturn Scholars skeptical is the fact that this was mostly kept by humans who live unfortunately short lifespans, unlike the elves who live to be 300. The known human scholar in Nocturn society Eugine Bachlier called this racist and stupid. He does not believe the myth but he thinks that's a damn stupid reason not to.

Many argue that it is true though, as the time period seems to line up with when the records of the dragons suddenly ends.