Vertigo

DC Vertigo, also known as Vertigo Comics or simply Vertigo, is an imprint of the American comic book publisher DC Comics. Vertigo publishes comics with adult content, such as nudity, drug use, profanity, and graphic violence, that do not fit the restrictions of DC's main line. Its comics include company-owned series set in the DC Universe, such as The Sandman, Swamp Thing, and Hellblazer, and creator-owned works, such as Preacher, Y: The Last Man, and Fables. Vertigo originated from DC's 1980s adult comic line, which began after DC stopped submitting The Saga of the Swamp Thing for approval by the Comics Code Authority. Following the success of two adult-oriented 1986 limited series, Batman: The Dark Knight Returns and Watchmen, DC's output of adult comics, edited by Karen Berger, grew.

From the Wikipedia article “Vertigo Comics”, licensed under CC BY-SA 4.0.

Comics and manga publishers typically acquire through creator pitches, portfolio reviews at conventions, contests and agents. A pitch package normally includes a series synopsis, character designs and several finished sample pages. Many publishers post open-submission windows; outside them, unsolicited material may be discarded.