The personification of discord and the degraded age, identified with Duryodhana in the epic's list of incarnations.
Accounts of this vary across texts and traditions. This entry primarily follows Mahabharata, with other tellings (Puranic traditions (Harivamsha, Bhagavata Purana), Regional retellings) noted where relevant.
Per tradition, not a genealogical relationship.
Kali is the personification of the age of discord, the Kali Yuga. The Adi Parva's list of divine incarnations names Duryodhana as his portion. This is a theological layer, and is not asserted in the story with the same weight as Krishna's divinity.
The Adi Parva says that Kali was born as Duryodhana, along with Shakuni as an embodiment of Dvapara. This should not be confused with the Kali of the Nala story in the Vana Parva.
This entry is independently written for myVamsam using the sources listed above. Where traditions differ, this entry identifies the relevant tradition rather than presenting one account as universally established fact.