MISTER NEBULA

Justice League America #36"GNort by GNortwest"

Mar 1990

No listings

Justice League Quarterly #2

Mar 1991

No listings

JLA Secret Files #1

Earliest catalogued appearance of Hourman (Matthew).

Sep 1997

No listings

Doom Patrol/JLA Special #1"Milk Wars: The End"

Apr 2018

No listings