David wrote the "Star Trek" comic book for DC from 1988 to 1991, when that company held the licensing rights to the property, though he has opined that novels are better suited to "Star Trek", whose stories are not highly visual. He and Ron Marz cowrote the "DC vs. Marvel" intercompany crossover in 1996. David enjoyed considerable runs on "Supergirl" and "Young Justice", the latter eventually being canceled so that DC could use that book's characters in a relaunched "Teen Titans" monthly.