Actor and writer John Leguizamo will sign copies of his graphic novel “Ghetto Klown” at the Denver Independent Comics & Art Expo (DiNK), April 14-15 at the McNichols Civic Center building. (Provided by DiNK) Through dozens of film, TV and theater projects over the past three decades, John Leguizamo has gotten intimate with the never-ending process of promoting his latest project. But even having co-starred in “Spawn,” “Kick-Ass 2,” “Super Mario Bros.” and the “Ice Age” films — among other comic book-friendly fare — the 53-year-old Emmy winner is still a relative newbie to the comic-con scene. “This is only my second comic con like this,” said Leguizamo, who will appear at this weekend’s Denver Independent Comics & Art Expo in support of his Eisner-nominated graphic novel “Ghetto Klown.” “I’ve done them before — including the big one in San Diego — but those were more like movie panels with the whole cast.