Sim

A página da wikia para Blanks lista alguns caracteres possíveis. Entre eles está Ferik Jurgen .

Despite his unprepossessing physical appearance, his indefatigable body odour, and general lack of basic social skills, he had several qualities which made him indispensable to Cain, most notably his fierce bravery and unwavering loyalty to Cain, the Guard, and the Emperor, his implacability under the worst of conditions (except flying), and, last but not least, his incredibly rare attributes as a Blank, which saved both Cain and several others from Daemonic and psychic attack innumerable times.

O status de Jurgen é confirmado no epílogo do primeiro romance de Cain, Para o Imperador , em uma discussão entre Caim e Inquisidor Amberley Vail:

"You think Jurgen's a psyker?" ... Amberley shook her head.

"No, quite the reverse. He's a blank, I'm sure of it." ... "Blanks are like anti-psykers," she explained. "They can't be affected by psykers or warp entities. They block telepathic communication. You saw how the patriarch reacted to him...."

"That explains a lot," I said, recalling a number of incidents over the years which had seemed no more than mildly puzzling at the time, but which I now realised formed a pattern, confirming my aide's resistance to psychic attack. "How long have you known?"

"Since the first time I saw him," she admitted. "When Rakel [a sanctioned psyker] had a seizure when he was trying to help her...."

( Para o Imperador , Epílogo, p. 269 na edição completa Herói do Império .)

Eles com certeza o fazem, mas no fluff por qualquer motivo, eles são muito raros.

O inquisidor Gideon Ravenor é um homem chamado Wystan Frauka.

a man with the latent ability to block out psychic activity. Big, chain-smoking and disliked by pretty much everyone (in part because of his psychic blankness. It was mentioned in Xenos that the field untouchables project also creates a sense of fear, revulsion and dread in others.). An interesting difference to the Eisenhorn novels is Frauka's so-called inhibitor, a device allowing him to shut down his natural anti-psi field. He is often found passing the time by reading pornographic data-slates or staring at the female members of the team.

E eu assumirei que você não leu esta série particular de livros? Você definitivamente deveria, na minha humilde opinião, a série Inquisitor está lá em cima com o melhor material de 40k.