St. LOUIS — The Holy Ghost is visible, chatty and even a quipster in a new comics collection by John Hendrix. Sometimes the Ghost wears headgear (Santa hat, football helmet, party cone). And he hangs out with a squirrel and a badger, who ask questions, or offer answers, about God, life and death. “It’s definitely the most personal work I’ve made,” Hendrix says. “Anytime you’re writing about issues of faith, it invites questions about your own doubts, your own certainty about things.” People of faith always have doubts, he says, but putting “The Holy Ghost” out in the world feels a bit like he …