Colfax, Ind.-based Mike Altman makes no attempt to hide his comic book influences in his acrylic on canvas paintings. In "Robot #3’s Middle School Picture" you see a red robot squirming in the glare of a photographer’s flash while gritting his metallic teeth. This painting will remind you of Calvin & Hobbes if you’re at all familiar. Another robot-themed painting, "Galactic Coffee-Break," shows three robots, looking like rejects from a Jetsons casting call, posed behind a floating cup of zero gravity coffee. Then there’s his series on music icons, including portraits of Tammy Wynette, Hank Williams and Johnny Cash in a single-canvas diptych picturing him as both a young and an old man. There’s humor in these portraits -- Tammy Wynette is pictured with an exaggeratedly thin neck, for example -- but also a sad whiff of nostalgia. Perhaps this is because, as pop-culture-obsessed Americans, we’re obsessed with icons that are just as mortal as the rest of us. Through June 20; 317-356-3776, www.avframinggallery.com.