Signalman
Phillip Cobb
- Also known as
Appearances
- Batman #112 — 1957-12-00
- Wanted. The World's Most Dangerous Villains #1 — 1972-07-00
- Justice League of America #195 — 1981-10-00
- Justice League of America #196 — 1981-11-00
- Justice League of America #197 — 1981-12-00
- Who's Who: The Definitive Directory of the DC Universe #20 — 1986-10-00
- Who's Who: The Definitive Directory of the DC Universe #21 — 1986-11-00
- Justice League of America #6 — 2013-09-00
- Trinity of Sin: Pandora #2 — 2013-09-00
- Batman '66 #30 — 2016-02-00
- Justice League: The New 52 #2 — 2025-05-00