Walter Mark 'Prof' Haley
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First Appearance: Showcase (1956) #6
View a chronological listing of this character's appearances
Adventure Comics (1938)
Adventures of Superman (1987)
#508 Bizarro Comics (2001)
- 'The Future Is Now!'
Booster Gold (2007)
#1 Challengers of the Unknown (1958)
- '52 Pick-Up, Chapter 1: Secret Origins'
#1#2#3#4 Challengers of the Unknown (1991)
- 'The Wizard of Time'#5
- 'The Riddle of the Star-Stone'#6#7#8#9#10#11
- 'The Creatures from the Forbidden World'#12#13#14#15#16#17#32
- 'One Challenger Must Die!'#48
- 'Twilight Of The Challengers!'#74
- 'To Call a Deadman'#75
- 'Ultivac is Loose!'#78#79#80#81
- 'Multi-Man's Master Plan'#82
- 'The Lurker Below'#83
- 'Seven Doorways To Destiny'#84
- 'To Save A Monster'#85
- 'The Creature From The End Of Time'#86
- 'The War At Times End'#87
- 'Twelve Million Years to Twilight'
HC Challengers of the Unknown (1997)
- 'Challengers of the Unknown By Jeph Loeb and Tim Sale'TPB
- 'Challengers of the Unknown Must Die!'#1
- 'The Challengers Must Die!'#4
- 'The Restless and the Young!'#5
- 'As The World Spins!'#7
- 'Another World!'#8
- 'One Life to Give!'
#7 Challengers of the Unknown Archives (2003)
- 'Last Days'#8
- 'Beginnings and Endings'#9
- 'Through A Glass, Darkly'#16
- 'Today is a Long Time Coming'
Challengers of the Unknown By Jack Kirby (2012)
HC Crisis on Infinite Earths (1985)
- 'Challengers of the Unknown By Jack Kirby'TPB
- 'Challengers of the Unknown by Jack Kirby'
#5 DC Comics Presents (1978)
- 'Worlds In Limbo'#8
- 'A Flash Of The Lightning!'#11
- 'Final Crisis'
#84 DC Universe: Secret Origins (2012)
- 'Give Me Power...Give Me Your World!'
HC DCU: Legacies (2010)
- 'DC Universe: Secret Origins'TPB
- 'DC Universe: Secret Origins'
Doom Patrol (1964)
#101 Doom Patrol (2009)
- 'I, Kranus, Robot Emperor!'#102
- '8 Against Eternity'
Doom Patrol Archives (2002)
Graphic Ink: The DC Comics Art of Darwyn Cooke (2015)
HC History of the DC Universe (1986)
- 'Graphic Ink: The DC Comics Art of Darwyn Cooke'
Infinite Crisis Secret Files 2006 (2006)
Infinity, Inc. (1984)
JLA: Year One (1998)
#2 Justice League of America (1960)
- 'Group Dynamic'#12
- 'Justice For All'
#144 Justice League of America (2006)
- 'The Origin Of The Justice League - - Minus One!'
Justice Society of America (2007)
#52 Legends of the DC Universe 80-Page Giant (1998)
- 'The Secret History of Monument Point Chapter Two: Weird Mystery Tales'#53
- 'The Secret History Of Monument Point Chapter Three: Strange Adventures'#54
- 'The Secret History of Monument Point Chapter Four: Crisis'
Legends of the DCU: Crisis on Infinite Earths (1999)
#8 Secret Origins (1986)
- 'Week Eight: The Rising and Advancing of Ten Spirits'
#12 Showcase (1956)
- 'Starring Challengers of the Unknown & The Golden Age Fury'#12 (Newsstand Edition)
- 'Starring Challengers of the Unknown & The Golden Age Fury'
#6 Silver Age 80-Page Giant (2000)
- 'The Secret of the Sorcerer's Box'#7
- 'Ultivac Is Loose!'#11
- 'The Day the Earth Blew Up'#12
- 'Menace of the Ancient Vials'#100
- 'There Shall Come a Gathering'
Silver Age Secret Files (2000)
Silver Age: Challengers of the Unknown (2000)
#1 Solo (2004)
- 'A Small Matter of Time'
Super-Team Family (1975)
#65 The Brave and the Bold (1955)
- 'Out of Hyper-Time!'
#98 The Brave and the Bold (2007)
- 'Mansion Of The Misbegotten!'#115
- 'The Corpse That Wouldn't Die!'
HC vol. 01 The DC Comics Encyclopedia (2004)
- 'The Lords Of Luck'HC vol. 02
- 'The Book Of Destiny'TPB vol. 01
- 'The Lords of Luck'TPB vol. 02
- 'The Book of Destiny'#6
- 'The Lords of Luck, Chapter Six: The Girl Who Knew Too Much'#7
- 'Scalpels and Chainsaws'#10
- '[The Book of Destiny, Part 4]'#11
- '[The Book of Destiny, Part 5]'#12
HC The Deadman Collection (2001)
- 'The DC Comics Encyclopedia'HC
- 'The DC Comics Encyclopedia: Updated And Expanded'
The Essential Showcase 1956-1959 (1993)
The Flash: A Celebration of 75 Years (2015)
HC The Golden Age (1993)
- 'The Flash: A Celebration of 75 Years'
Villains United (2005)
Who's Who in the DC Universe (1990)
#1 Who's Who: The Definitive Directory of the DC Universe (1985)
- 'Amanda Waller To Wotan'
#4 World's Finest Comics (1941)
- 'Cadre to Chris KL-99'
Challengers of the Unknown (DC)
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