Several artists have also produced a large amount of notable work for Vertigo, several (Steve Dillon, Pia Guerra, Eduardo Risso and Darick Robertson) mainly producing lengthy runs on individual creator-owned titles (in Guerra's case, "Y: The Last Man" makes up around 80% of her output to date), but others on a number of titles. Vertigo's main Universe titles, "The Sandman", "Hellblazer" and "Swamp Thing", have been particularly artistically diverse, and home to many talents, while the large number of creator-owned miniseries has seen large numbers of individuals producing work for Vertigo.