immortal or multi-centennial beings, with prominent examples including Aldous Nix (2,000+ years old) and various 1,000-year-old warlocks from the 

Shadowhunters fandom universe. In fantasy lore, the Eredar warlocks(such as Gul’dan) in World of Warcraft are among the oldest, created ~25,000 years ago, while ancient mythologies often cite sorcerers like Merlin. Fandom +4

Oldest Warlocks in Popular Fiction

• Aldous Nix (Shadowhunters): A High Warlock of Manhattan cited as being over 2,000 years old.
• Malcolm Fade (Shadowhunters): Over 900 years old as of 1903.
• Baba Agnieszka (Shadowhunters): One of the “eldest” warlocks born before the 10th century.
• Tessa Gray (Shadowhunters): A unique, long-lived warlock hybrid (child of a Prince of Hell). Reddit +3

Oldest Warlocks in Gaming/Lore

• Eredar Warlocks (World of Warcraft): Created by Kil’jaeden ~25,000 years ago, making them potentially the oldest in that lore.
• Gul’dan (World of Warcraft): Known as the first orcish warlock, mentored by Kil’jaeden.
• The Great Old One (D&D): Not a single entity, but this subclass represents the oldest, most ancient cosmic pacts.
• The Warlock (Larry Niven’s series): An ancient sorcerer in a dying world, setting the tone for the “Warlock’s Era”. 

These figures are characterized by their extreme age, demonic heritage, or connection to cosmic entities, often placing them as key figures in the history of their respective universes. 

The term “oldest warlocks” refers to 

different figures depending on the fictional universe or historical context you are interested in.

The Shadowhunter Chronicles 

In Cassandra Clare’s universe, warlocks are immortal, leading to several notable ancient figures: 

• Aldous Nix: Known as the High Warlock of Manhattan in the 1920s, he was roughly 2,000 years old before his death.
• Magnus Bane: One of the most famous warlocks, Magnus is approximately 400 years old as of the main series.
• Malcolm Fade: He lived for over 900 years by the early 20th century.
• Baba Agnieszka: One of the eight warlocks alive in the 1990s who claim to be older than the first Shadowhunter, Jonathan Shadowhunter, making her over 1,000 years old. Fandom +4

World of Warcraft

The history of warlocks in Azeroth spans tens of thousands of years:

Kil’jaeden and Archimonde: Originally leaders of the Eredar roughly 25,000 years ago, they became the first major warlocks after making a pact with Sargeras.

Gul’dan: Recognized as the first orcish warlock, he played a pivotal role in the corruption of the Horde and the opening of the Dark Portal.

Ner’zhul: An elder shaman who later turned to void and fel magic, leading to his eventual transformation into the Lich King. 

Dungeons & Dragons

While individual ages vary by race, the “oldest” concepts relate to the patrons and the class’s origins: 

• The Great Old One: These are not warlocks themselves but ancient, cosmic entities (like Cthulhu or Tharizdun) that serve as patrons for warlocks, drawing power from the Far Realm.
• Historical Origins: The Warlock class first appeared as a “wizard level” in original D&D but was officially defined as a separate class making pacts with outer entities in later editions to gain “forgotten power”. YouTube +4

Other Notable Mentions

• Ancient Warlocks (Band): A heavy rock band from Seattle known for their “fuzz” and “jammy groove,” which released their debut album in 2013.
• B.C. Rich Warlock: A famous guitar model designed in the late 1960s/early 1970s, with “old” versions often referring to those from the late 80s or early 90s. The Obelisk +1

Are you looking for the lore of a specific game series, or perhaps more information on historical beliefs regarding warlocks?