Kaeya Alberich was the Prince of Khaenri'ah before the Cataclysm. After the unfortunate eveny, he was cursed with the form of a dragon, and immortality.

Kaeya has been like this for 500 years.

Sometimes, the dragon likes to put humans in stressful situations in order to test their values. Most of the time, however, he steals treasure and hoards it inside his lair.