Headmaster Hammer

Headmaster Hammer

Character

Collingwood Vaughn Hammer

Description

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Character Details

Real Name

Collingwood Vaughn Hammer

Hero Name

Headmaster Hammer

Publisher

DC Comics

Powers

Leadership

Gender

Male

Aliases

Collingwood Vaughn Hammer

Headmaster Hammer

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Latest Series Appearances

Gotham Academy: First Year

Gotham Academy: First Year (2025)

DC Comics

Limited Series

6 issues

Gotham Academy: Second Semester

Gotham Academy: Second Semester (2016)

DC Comics

12 issues

Gotham Academy

Gotham Academy (2014)

DC Comics

18 issues

Gotham Academy: Endgame

Gotham Academy: Endgame (2015)

DC Comics

One-Shot

Latest Issue Appearances

Chapter 1: First Day of School

#1

Chapter 1: First Day of School

Gotham Academy: First Year (2025)

Oct 01, 2025

Issue #1

#1

Issue #1

Gotham Academy (2023)

May 09, 2023

The Ballad of Olive Silverlock Finale

#12

The Ballad of Olive Silverlock Finale

Gotham Academy: Second Semester (2016)

Aug 09, 2017

The Ballad of Olive Silverlock Part One

#9

The Ballad of Olive Silverlock Part One

Gotham Academy: Second Semester (2016)

May 10, 2017

Part 4

#5

Part 4

Gotham Academy: Second Semester (2016)

Jan 11, 2017

Issue #1

#1

Issue #1

Academia Gotham: Final de Temporada (2017)

The Carnival Midnight

#4

The Carnival Midnight

Gotham Academy: Second Semester (2016)

Dec 14, 2016

Part 3

#3

Part 3

Gotham Academy: Second Semester (2016)

Nov 09, 2016

Yearbook Part Five; Whatever Happened to Professor Milo...?; Precious Metals; Talent Show; Drivers Ed

#18

Yearbook Part Five; Whatever Happened to Professor Milo...?; Precious Metals; Talent Show; Drivers Ed

Gotham Academy (2014)

May 11, 2016

Yearbook Part Four; This One's For You; A Familiar Story; What Became of the Gilkey Warlocks...?

#17

Yearbook Part Four; This One's For You; A Familiar Story; What Became of the Gilkey Warlocks...?

Gotham Academy (2014)

Apr 13, 2016

Gotham Academy

#2

Gotham Academy

Gotham Academy (2015)

Mar 16, 2016

Issue #1

#1

Issue #1

Batman Character Encyclopedia (2016)

Feb 17, 2016

Story Arcs

"Batman" Endgame

"Batman" Endgame

Robin War

Robin War

Crossover Event

The Ballad of Olive Silverlock

The Ballad of Olive Silverlock

Main Story

Yearbook

Main Story

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