The following characters appear in H.P. Lovecraft's story cycle — the Cthulhu Mythos.
Overview:
(655?–738)
The infamous "mad Arab" credited as the author of Al-Azif (the Necronomicon). He is first mentioned in Lovecraft's "The Nameless City". See Abdul Alhazred.
The son of Henry Wentworth Akeley. See "The Whisperer in Darkness".
Vermont folklorist and correspondent of Albert Wilmarth who becomes involved with the Fungi from Yuggoth. See "The Whisperer in Darkness".
(c. 1831–1926?)
One of the few completely human residents of Innsmouth. Despite very advanced age, he apparently does not die a natural death, but is dealt with in the uproar set off by narrator. See "The Shadow Over Innsmouth".
(1857–November 23, 1926)
A Professor Emeritus of Semitic languages at Brown University who researches the worldwide Cthulhu cult. See "The Call of Cthulhu".
(1855–1939/1946?)
Chief librarian at Miskatonic University who confronted the Dunwich Horror. See "The Dunwich Horror".
Professor of ancient history at Miskatonic University, mentioned in “The Shadow Out of Time”.