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J'Onn J'Onzz
J'Onn J'OnzzJ'Onn J'OnzzJ'Onn J'Onzz

J'Onn J'Onzz

611 appearances · Golden Age · 1955–2026 · 25 key issues
Who is J'Onn J'Onzz?

A green-skinned telepathic alien from Mars, J'Onn J'Onzz was accidentally transported to Earth in 1955 by scientist Dr. Erdel's experimental robot-brain device. Stranded on an unfamiliar world, he adopted a human identity and used his extraordinary Martian abilities to serve as a detective and hero.

Few characters in DC's vast history can claim roots as deep and a presence as enduring as J'Onn J'Onzz, who made his remarkable debut in Detective Comics #226 back in 1955 — a Golden Age origin that places him among the most venerable figures in superhero comics. Over more than seven decades of publication, he has accumulated 568 catalog appearances and 25 key issues that collectors prize, a testament to just how central he's become to the DC universe. His most prominent home has been the pages of Justice League of America and JLA, where he shares adventures with titans like Batman, Superman, and The Flash — as elite a circle as comics has to offer. Created by Edmond Hamilton and Dick Sprang, J'Onn J'Onzz is one of those rare Golden Age discoveries who never faded into nostalgia but instead grew into an indispensable cornerstone of DC storytelling — absolutely worth every longbox dig it takes to find him.

Identity

Real name. J'onn J'onzz

Powers. : The Martian Manhunter possesses highly advanced reasoning and logic capabilities, and uses them to great effect.; : The Martian Manhunter is able to speak Martian and English.

Teams & affiliations
Justice League
★ First appearance
Detective Comics #225
Nov 1955

Trivia

  • Batman debuted as a back-up feature in Detective Comics rather than the cover headliner, a modest launch that casual readers often overlook entirely.dc.fandom.com
  • DC cemented his status by making him one of the seven founding members of the Justice League of America, placing him at the team's core from the very beginning rather than bringing him in as a later add-on.dc.fandom.com
  • Keith Giffen has written more of J'Onn J'Onzz's comics than any other writer in our catalog — 42 issues.

Top series

Covers through the years — 1955–2021

Detective Comics #226 1955
Detective Comics #226
The Flash #123 1961
The Flash #123
World's Finest Comics #175 1968
World's Finest Comics #175
World's Finest Comics #226 1974
World's Finest Comics #226
Justice League of America #149 1977
Justice League of America #149
DC Comics Presents #38 1981
DC Comics Presents #38
Legends #1 1986
Legends #1
Congorilla #3 1993
Congorilla #3
The Spectre #62 1998
The Spectre #62
Outsiders #27 2005
Outsiders #27
Infinite Crisis #4 2006
Infinite Crisis #4
DCU: Legacies #7 2011
DCU: Legacies #7
Graphic Ink: The DC Comics Art of Ivan Reis #[nn] 2016
Graphic Ink: The DC Comics Art of Ivan Reis #[nn]
The Other History of the DC Universe #1 2021
The Other History of the DC Universe #1

Appearances (301–450 of 611, oldest first)

52 (2006)
Marvel DC Crossover (1997)
#9
Spider-Man (1997)
#20
X-Men (1997)
#20
Green Arrow (1988)
Martian Manhunter Annual (1998)
#1
Superman: The Doomsday Wars (1998)
Wonder Woman (1987)
DCU Heroes Secret Files (1999)
#1
Young Justice (1998)
#6
Fanboy (1999)
#3
JLA - Die neue Gerechtigkeitsliga (1997)
#25
Comic Box (1998)
Green Lantern (1990)
Wizard: The Comics Magazine (1991)
JLA: Earth 2 (2000)
Sins of Youth: Kid Flash / Impulse (2000)
#1
JLA: Heaven's Ladder (2000)
Superman: Lex 2000 (2001)
#1
JLA / Witchblade (2000)
#1
Justice Leagues: JL? (2001)
#1
Spécial DC (1997)
Starman (1994)
#76
Bizarro Comics (2001)
Joker: Last Laugh (2001)
#5
Justice League Adventures (2002)
Superman (1987)
Adventures of Superman (1987)
JLA: Secret Origins (2002)
JLA / JSA Secret Files & Origins (2003)
#1
Action Comics (1938)
JLA / JSA: Virtue and Vice (2002)
Superboy #147 May-June 1968 Replica Edition (2003)
Justice League Adventures [Six Flags Giveaway] (2003)
#1
Batman: Gotham Knights (2000)
JLA: Liberty and Justice (2003)
Con Edison Presents Adventures with the DC Super Heroes: Power House! (2004)
Plastic Man (2004)
#3
DC 100-Page Super Spectacular No. 6 Replica Edition (2004)
Identity Crisis (2004)
#1
Challengers of the Unknown (2004)
Firestorm (2004)
Enginehead (2004)
#6
Superman / Batman (2003)
JLA: Classified (2005)
#2
Justice League Unlimited (2004)
Bizarro World (2005)
Justice League Elite (2004)
JLA / Cyberforce (2005)
#1
DC Premium (2001)
#39
Outsiders (2003)
The World's Greatest Super-Heroes (2005)
Solo (2004)
#7
Supergirl (2005)
Infinite Crisis (2005)
#4
Villains United: Infinite Crisis Special (2006)
#1
Crisis Aftermath: The Battle for Blüdhaven (2006)
#4
Justice League of America (2006)
Green Lantern Sonderband (2006)
#2
Martian Manhunter (2006)
#1
Infinite Crisis Companion (2006)
Countdown (2007)
Green Arrow: Year One (2007)
#1
Martian Manhunter: The Others Among Us (2007)
Justice League Wedding Special (2007)
#1
Mystery in Space (2007)
#1
52: The Companion (2007)
The All-Star Companion (2000)
#3
World War III (2007)
The Brave and the Bold (2007)
Cartoon Network Action Pack (2006)
#22
Countdown to Final Crisis (2008)
Teen Titans (2004)
#8
Tiny Titans (2008)
JLA: That Was Now, This Is Then (2008)
DCU Holiday Special (2009)
#1
Wednesday Comics (2009)
#12
Batman: The Brave and the Bold (2009)
#18
Brightest Day: The Atom Special (2010)
#1
DCU: Legacies (2010)
The Outsiders (2009)
#31
Adventure Comics (2009)