He has worked on feature film tie-in comics such as Star Wars: General Grievous and Superman Returns Prequel #3.

[2] Leonardi's interest in becoming an artist was inspired by the work of Joe Kubert, which he discovered in the second grade when he read Star Spangled War Stories #139 (July 1968).

[4] He is credited, along with fellow illustrator Mike Zeck, of designing the black-and-white costume to which Spider-Man switched during the 1984 Secret Wars miniseries, and later wore for a time.

[9] For DC Comics, Leonardi was one of the artists on Batman #400 (Oct. 1986)[10] and he drew the Batgirl story in Secret Origins vol.

[11] Back at Marvel, Chris Claremont and Leonardi introduced the fictional country of Genosha in Uncanny X-Men #235 (Oct.

Subsequent miniseries he drew include Star Wars: General Grievous in 2005, and the 2006 movie tie-in, Superman Returns Prequel #3.