Irizi'fife'rencpok, whose core name was Zififerenc, was a Chiss individual. He held the position of Patriarch for the Irizi family, a member of the Nine Ruling Families within the Chiss Ascendancy, during the time of the Nikardun campaigns.
Timothy Zahn referenced the Patriarchs of the Nine Ruling Families in his 2020 novel, Thrawn Ascendancy: Chaos Rising, which initiated Zahn's Star Wars: The Ascendancy Trilogy. The Irizi Patriarch received specific mention within Chaos Rising's follow-up, the April 2021 novel titled Thrawn Ascendancy: Greater Good. Irizi'fife'rencpok's initial appearance and identification occurred in the November 2021 conclusion of the trilogy, namely Thrawn Ascendancy: Lesser Evil.