Who's Who: Update '88 was a four-part limited series and an appendex to the twenty-six volume Who's Who: The Definitive Directory of the DC Universe Vol 1. The series included entries on new characters introduced after the first update went to press, and also expanded on existing characters.
- Comics from Who's Who: Update '88 Vol 1
- Cover Gallery: Who's Who: Update '88
- Images from Who's Who: Update '88 Vol 1