Headmaster Hammer, also known as Collingwood Vaughn Hammer, has appeared in 26 comics from DC Comics since 2014. The most recent cataloged appearance dates to 2025. Most cataloged appearances come from Gotham Academy.
Limited Series
DC Comics
6 issues
Collected Edition
1 issue
12 issues
Panini Brasil
18 issues
3 issues
DK Publishing
Gotham Academy: First Year (2025)
Oct 01, 2025
Gotham Academy (2023)
May 09, 2023
Gotham Academy: Second Semester (2016)
Aug 09, 2017
May 10, 2017
Jan 11, 2017
Academia Gotham: Final de Temporada (2017)
Dec 14, 2016
Nov 09, 2016
Gotham Academy (2014)
May 11, 2016
Apr 13, 2016
Pomeline Fritch
Olive Silverlock
Kyle Mizoguchi
Colton Rivera
Isla MacPherson
Mia Mizoguchi
Sybil Silverlock
Lucy
Heathcliff Ray
Crossover Event
Main Story
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