Pérez says he was not the intended artist for "Crisis on Infinite Earths", but was excited when he learned about it, seeing it as an opportunity for "revenge" against Marvel, which he blamed for blocking the "JLA/Avengers" crossover he had been working on. He enjoyed working with Wolfman again, and took a leave of absence from "The New Teen Titans" to draw the series. DC initially did not know Pérez would want to work on it. According to Pérez, he was motivated by the fact that DC did not know if the series was going to be a success. He also wanted "to draw everybody I could get my hands on" and called illustrating the series some of the most fun he ever had. Pérez was excited because not only did he get to draw the Teen Titans again, but also obscure characters he was not familiar with, saying he could possibly have never gotten another chance. One panel in "Crisis on Infinite Earths" shows the Marvel Universe being destroyed with other earths. When Giordano (the series' initial inker) had difficulty meeting deadlines while continuing as DC vice president and executive editor, editorial coordinator Pat Bastienne reassigned the inking to Jerry Ordway despite Giordano's objections.