When Caesar Romero saw his costume in a drawing for the first time, he started to laugh hysterically. The producers liked his laugh so much that they asked him to make it the Jokers laugh.
When asked to give a speech at Harvard about his role on "Batman" (1966), he brought the original costume, said to be valued at a half-million dollars. Some students came up to him dressed as security guards and told him they would keep the costume safe. Then in the middle of the speech, one student stood up and asked, "When is a costume not a costume? When it's stolen." The lights dimmed and the students grabbed the costume and made off. After snapping pictures with one another in the cape, they later called Ward and gave the costume back. The ringleader of the gang? Harvard Lampoon editor Conan O'Brien.