Person » Katii O'Brien is credited in 345 issues.
Fearless Future
Hellboy and the B.P.R.D.: The Beast of Vargu and Others
The Flower of the Witch
Sir Edward Grey, Witchfinder: The Reign of Darkness
Hellboy and the B.P.R.D.: The Seven Wives Club
Hellboy and the B.P.R.D.: Her Fatal Hour and the Sending
Gert and the Sacred Stones
B.P.R.D. The Devil You Know Omnibus
Hellboy Universe: The Secret Histories
Hellboy and the B.P.R.D.: 1952-1954
Imogen of the Wyrding Way
Hellboy Universe Essentials: Hellboy
Hellboy and the B.P.R.D.: Family Ties
Young Hellboy: The Hidden Land
Hellboy: The Bones of Giants
The House
The Sword of Hyperborea
Hellboy Universe Essentials: Lobster Johnson
Hellboy Universe Essentials: Witchfinder
Hellboy: The Silver Lantern Club
Leonide the Vampyr: A Christmas for Crows
Hellboy and the B.P.R.D.: The Return of Effie Kolb and Others
The British Paranormal Society: Time Out of Mind
Lady Baltimore - The Dream of Ikelos
Hellboy and the B.P.R.D.: 1957: Fearful Symmetry
Frankenstein: New World
Castle Full of Blackbirds
Headless Horseman Halloween Annual
Koshchei in Hell
Hellboy Winter Special: The Yule Cat
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