DC Comics
HEADMASTER HAMMER
17
APPEARANCES
4
SERIES
FIRST APPEARANCE
1ST APPEARANCE
Gotham Academy #1
December 2014
Earliest catalogued appearances of Maps Mizoguchi, Olive Silverlock, Colton Rivera, and 6 more.
KEY APPEARANCES
All 17 appearances.
CREATORS
Writers and artists on Headmaster Hammer's earliest appearances.
