The British Invasion of American comic books is a term used to describe the influx in the late 1980s of British comics creators, especially writers. The creators initially worked in the employ of DC Comics, but in recent years many have also worked for Marvel Comics. Characteristics of the British Invasion included a greater sensitivity to language, more mature storylines, and a move away from the superhero genre. The invasion led DC Comics to create the Vertigo imprint to target the mature audiences of these writers.