Featured in these Comics
Other Personas of Rex Mason
History
PRE-CRISIS FIRST APPEARANCE: The Brave and the Bold #57 (January, 1965)
POST-FLASHPOINT FIRST APPEARANCE: Justice League International #1 (November, 2011)
PRE-CRISIS FIRST APPEARANCE: The Brave and the Bold #57 (January, 1965)
POST-FLASHPOINT FIRST APPEARANCE: Justice League International #1 (November, 2011)