Actions
 CHALLENGERS OF THE UNKNOWNCHRONOLOGY 
Created by Jack Kirby

The Original Universe

CHRONOLOGY

Challengers of the Unknown first appeared in Showcase #6 (January-February 1957).

Below is the definitive list of appearances of Challengers of the Unknown in chronological order. Flashback sequences or story entries will be followed by a [Flashback] note. Stories that for some reason are no longer part of current continuity will have a comment saying this in a note following the entry.

Follow the links for a complete index of the issue, including story and creator info as well as full character chronology and in some cases story synopses.

The chronology list can also be sorted according to Comic book title. Please note: If you want to go back to the chronological listing after having used the sorting tool you have to reload the page.

To go to the Challengers of the Unknown biography click here.


Challengers of the Unknown Chronology

Click to list by alphabetically by title
Showcase #6 (January-February 1957): "The Secrets of the Sorceror's Box"
Showcase #7 (March-April 1957): "Ultivac is Loose"
Showcase #11 (November-December 1957): "The Day the Earth Blew Up"
Showcase #12 (January-February 1958): "The Menace of the Ancient Vials"
Challengers of the Unknown Vol. 1 #1 (April-May 1958): "The Man Who Tampered With Infinity"
Challengers of the Unknown Vol. 1 #1/2 (April-May 1958): "The Human Pets"
Challengers of the Unknown Vol. 1 #2 (June-July 1958): "The Monster Maker"
Challengers of the Unknown Vol. 1 #2/2 (June-July 1958): "The Traitorous Challenger"
Challengers of the Unknown Vol. 1 #3 (August-September 1958): "The Secret of the Sorcerer's Mirror"
Challengers of the Unknown Vol. 1 #3/2 (August-September 1958): "The Menace of the Invincible Challenger"
Challengers of the Unknown Vol. 1 #4 (October-November 1958): "The Wizard of Time"
Adventures of Superman #508 (January 1994): "The Future Is Now!"
Challengers of the Unknown Vol. 1 #10/2 (October-November 1959): "The Four Faces of Doom" [Flashback]
Challengers of the Unknown Vol. 1 #5 (December 1958-January 1959): "Riddle of the Star-Stone"
Justice League of America #144 (July 1977): "The Origin of the Justice League - Minus One" [Flashback]
Challengers of the Unknown Vol. 1 #6 (February-March 1959): "Captives of the Space Circus"
Challengers of the Unknown Vol. 1 #6/2 (February-March 1959): "The Sorceress of Hidden Valley"
Challengers of the Unknown Vol. 1 #7 (April-May 1959): "The Beasts from Planet Nine"
Challengers of the Unknown Vol. 1 #7/2 (April-May 1959): "Isle of No Return"
Challengers of the Unknown Vol. 1 #8 (June-July 1959): "The Man Who Stole the Future"
Challengers of the Unknown Vol. 1 #8/2 (June-July 1959): "The Prisoners of Robot Planet"
Challengers of the Unknown Vol. 1 #9 (August-September 1959): "The Men Who Lost Their Memories"
Challengers of the Unknown Vol. 1 #9/2 (August-September 1959): "The Plot to Destroy Earth"
Challengers of the Unknown Vol. 1 #10 (October-November 1959): "The Cave-Man Beast"
Challengers of the Unknown Vol. 1 #10/2 (October-November 1959): "The Four Faces of Doom"
Challengers of the Unknown Vol. 1 #11 (December 1959-January 1960): "The Creatures from the Forbidden World"
Challengers of the Unknown Vol. 1 #12 (February-March 1960): "The Challenger from Outer Space"
Challengers of the Unknown Vol. 1 #12/2 (February-March 1960): "The Three Clues to Sorcery"
Challengers of the Unknown Vol. 1 #13 (April-May 1960): "The Prisoner of the Tiny Space Ball"
Challengers of the Unknown Vol. 1 #13/2 (April-May 1960): "The Creatures from the Past"
Challengers of the Unknown Vol. 1 #14 (June-July 1960): "The Man Who Conquered the Challengers"
Challengers of the Unknown Vol. 1 #14/2 (June-July 1960): "Captives of the Alien Beasts"
Challengers of the Unknown Vol. 1 #15 (August-September 1960): "The Return of Multi-Man"
Challengers of the Unknown Vol. 1 #15/2 (August-September 1960): "The Lady Giant and the Beast"
Challengers of the Unknown Vol. 1 #16 (October-November 1960): "The Incredible Metal Creature"
Challengers of the Unknown Vol. 1 #16/2 (October-November 1960): "Prisoners of the Mirage World"
Challengers of the Unknown Vol. 1 #17 (December 1960-January 1961): "The Genie Who Feared June"
Challengers of the Unknown Vol. 1 #17/2 (December 1960-January 1961): "Secret of the Space Capsules"
Challengers of the Unknown Vol. 1 #18 (February-March 1961): "The Menace of Mystery Island"
Challengers of the Unknown Vol. 1 #18/2 (February-March 1961): "The Doomed World of Tomorrow"
Challengers of the Unknown Vol. 1 #19 (April-May 1961): "The Alien Who Stole a Planet"
Challengers of the Unknown Vol. 1 #19/2 (April-May 1961): "The Beasts from the Fabulous Gem"
Challengers of the Unknown Vol. 1 #20 (June-July 1961): "Multi-Man Strikes Again"
Challengers of the Unknown Vol. 1 #20/2 (June-July 1961): "The Cosmic-Powered Creatures"
Challengers of the Unknown Vol. 1 #21 (August-September 1961): "The Weird World That Didn't Exist"
Challengers of the Unknown Vol. 1 #21/2 (August-September 1961): "The Challengers' Space-Pet Ally"
Challengers of the Unknown Vol. 1 #22 (October-November 1961): "The Curse of the Golden God"
Challengers of the Unknown Vol. 1 #22/2 (October-November 1961): "The Thing in Challenger Mountain"
Challengers of the Unknown Vol. 1 #23 (December 1961-January 1962): "Death Guarded the Doom Box"
Challengers of the Unknown Vol. 1 #23/2 (December 1961-January 1962): "The Island in the Sky"
Challengers of the Unknown Vol. 1 #24 (February-March 1962): "The Challengers Die at Dawn"
Challengers of the Unknown Vol. 1 #24/2 (February-March 1962): "Multi-Man, Master of Earth"
Challengers of the Unknown Vol. 1 #25 (April-May 1962): "Return of the Invincible Pharaoh"
Challengers of the Unknown Vol. 1 #25/2 (April-May 1962): "Captives of the Alien Hunter"
Challengers of the Unknown Vol. 1 #26 (June-July 1962): "Death Crowns the Challenger King"
Challengers of the Unknown Vol. 1 #26/2 (June-July 1962): "The Secret of the Space Spectaculars"
Challengers of the Unknown Vol. 1 #27 (August-September 1962): "The 1,001 Impossible Inventions"
Challengers of the Unknown Vol. 1 #27/2 (August-September 1962): "Master of the Volcano Men"
Challengers of the Unknown Vol. 1 #28 (October-November 1962): "The Revolt of the Terrible FX-1"
Challengers of the Unknown Vol. 1 #28/2 (October-November 1962): "Riddle of the Faceless Man"
Challengers of the Unknown Vol. 1 #29 (December 1962-January 1963): "Four Roads to Doomsday"
Challengers of the Unknown Vol. 1 #29/2 (December 1962-January 1963): "The War Between the Challenger Teams"
Challengers of the Unknown Vol. 1 #30 (February-March 1963): "Multi-Man--Villain Turned Hero"
Challengers of the Unknown Vol. 1 #30/2 (February-March 1963): "The Fifth Challenger"
Challengers of the Unknown Vol. 1 #31 (April-May 1963): "The Man Who Saved the Challengers' Lives"
Challengers of the Unknown Vol. 1 #32 (June-July 1963): "One Challenger Must Die"
Challengers of the Unknown Vol. 1 #32/2 (June-July 1963): "Cosmo Turns Traitor"
Challengers of the Unknown Vol. 1 #33 (August-September 1963): "The Challengers Meet Their Master"
Challengers of the Unknown Vol. 1 #33/2 (August-September 1963): "The Threat of the Trojan Robot"
Challengers of the Unknown Vol. 1 #34 (October-November 1963): "Beachhead, U.S.A."
Challengers of the Unknown Vol. 1 #34/2 (October-November 1963): "Multi-Woman, Queen of Disaster"
Challengers of the Unknown Vol. 1 #35 (December 1963-January 1964): "War Against the Moon-Beast"
Challengers of the Unknown Vol. 1 #35/2 (December 1963-January 1964): "Sons of the Challengers"
Challengers of the Unknown Vol. 1 #36 (February-March 1964): "The Giant in Challenger Moonbrain"
Challengers of the Unknown Vol. 1 #36/2 (February-March 1964): "Bodyguards to a Star"
Challengers of the Unknown Vol. 1 #37 (April-May 1964): "The Triple Terror of Mr. Dimension"
Challengers of the Unknown Vol. 1 #37/2 (April-May 1964): "The Last Days of the Challengers"
Challengers of the Unknown Vol. 1 #38 (June-July 1964): "The Menace the Challengers Made"
Challengers of the Unknown Vol. 1 #38/2 (June-July 1964): "Time Bomb on Holdout Island"
Challengers of the Unknown Vol. 1 #39 (August-September 1964): "The Phantom of the Fair"
Challengers of the Unknown Vol. 1 #39/2 (August-September 1964): "Rocky, the Genius Challenger"
Challengers of the Unknown Vol. 1 #40 (October-November 1964): "The Super Powers of the Challengers"
Challengers of the Unknown Vol. 1 #40/2 (October-November 1964): "The Spy in Challenger Cave"
Challengers of the Unknown Vol. 1 #41 (December 1964-January 1965): "The Challenger Who Quit"
Challengers of the Unknown Vol. 1 #41/2 (December 1964-January 1965): "Two Hours to Die"
Challengers of the Unknown Vol. 1 #42 (February-March 1965): "The League of Challenger-Haters"
Challengers of the Unknown Vol. 1 #42/2 (February-March 1965): "The Secret of the Masked Challenger"
Challengers of the Unknown Vol. 1 #43 (April-May 1965): "Four Against Monstro"
Challengers of the Unknown Vol. 1 #44/2 (June-July 1965): "Ace--the Challenger Who Went Bad"
Challengers of the Unknown Vol. 1 #47/2 (December 1965-January 1966): "The Terrors of Mr. Tic-Tac-Toe"
Challengers of the Unknown Vol. 1 #43/2 (April-May 1965): "The Haunted Island"
Challengers of the Unknown Vol. 1 #44 (June-July 1965): "The Curse of the Evil Eye"
Challengers of the Unknown Vol. 1 #45 (August-September 1965): "The Queen of the Challenger-Haters"
Challengers of the Unknown Vol. 1 #46 (October-November 1965): "The Strange Schemes of the Gargoyle"
Challengers of the Unknown Vol. 1 #46/2 (October-November 1965): "The Best Challenger Wins"
Challengers of the Unknown Vol. 1 #47 (December 1965-January 1966): "The Sinister Sponge"
Challengers of the Unknown Vol. 1 #48 (February-March 1966): "Twilight of the Challengers"
Doom Patrol #102 (March 1966): "8 Against Eternity"
Challengers of the Unknown Vol. 1 #49 (April-May 1966): "The Tyrant Who Owned the World"
Challengers of the Unknown Vol. 1 #50 (June-July 1966): "Final Hour for the Challengers"
Challengers of the Unknown Vol. 1 #51 (August-September 1966): "Smash the Sponge Man--Or Die"
Challengers of the Unknown Vol. 1 #52 (October-November 1966): "Two Are Dead--Two to Go"
Challengers of the Unknown Vol. 1 #53 (December 1966-January 1967): "Who is the Traitor Among Us?"
Challengers of the Unknown Vol. 1 #54 (February-March 1967): "War of the Sub-Humans"
Challengers of the Unknown Vol. 1 #55 (April-May 1967): "Taps for Red"
Challengers of the Unknown Vol. 1 #56 (June-July 1967): "License to Kill"
Challengers of the Unknown Vol. 1 #57 (August-September 1967): "The Kook and the Kilowatt Killer"
Challengers of the Unknown Vol. 1 #58 (October-November 1967): "Live Till Tomorrow"
Challengers of the Unknown Vol. 1 #59 (December 1967-January 1968): "Seekeenakee, the Petrified Giant"
Challengers of the Unknown Vol. 1 #60 (February-March 1968): "The Thing That Could Not Die"
Challengers of the Unknown Vol. 1 #61 (April-May 1968): "The Robot Hounds of Chang"
Challengers of the Unknown Vol. 1 #61/2 (April-May 1968): "The Chall Without a Memory"
Challengers of the Unknown Vol. 1 #62 (June-July 1968): "The Legion of the Weird"
Challengers of the Unknown Vol. 1 #62/2 (June-July 1968): "Me--the Walking Nightmare"
Challengers of the Unknown Vol. 1 #63 (August-September 1968): "None Shall Escape the Walking Evil"
Challengers of the Unknown Vol. 1 #64 (October-November 1968): "Invitation to a Hanging"
Challengers of the Unknown Vol. 1 #65 (December 1968-January 1969): "The Devil's Circus"
Challengers of the Unknown Vol. 1 #66 (February-March 1969): "Rendezvous with Revenge"
Challengers of the Unknown Vol. 1 #67 (April-May 1969): "The Dream Killers"
Challengers of the Unknown Vol. 1 #67/2 (April-May 1969): "Ace: the Beast in the Bomb"
Challengers of the Unknown Vol. 1 #68 (June-July 1969): "One of Us is a Madman"
Challengers of the Unknown Vol. 1 #69 (August-September 1969): "The Secret of Skull Mountain"
Challengers of the Unknown Vol. 1 #70 (October-November 1969): "A Scream of Yesterdays"
Challengers of the Unknown Vol. 1 #71 (December 1969-January 1970): "When Evil Calls"
Challengers of the Unknown Vol. 1 #72 (February-March 1970): "A Plague of Darkness"
Challengers of the Unknown Vol. 1 #73 (April-May 1970): "The Curse of the Killer Time Forgot"
Challengers of the Unknown Vol. 1 #74 (June-July 1970): "To Call a Deadman"
Challengers of the Unknown Vol. 1 #75 (August-September 1970): [Framing Sequence]
Super-Team Family #8 (December 1976-January 1977): "The Devil's Paradise"
Super-Team Family #9 (February-March 1977): "To Doomsday and Beyond"
Super-Team Family #10 (April-May 1977): "Multi-Man Rules the World"
Challengers of the Unknown Vol. 1 #81 (June-July 1977): "Multi-Man's Master Plan"
Challengers of the Unknown Vol. 1 #82 (August-September 1977): "The Lurker Below"
Challengers of the Unknown Vol. 1 #83 (October-November 1977): "Seven Doorways to Destiny"
Challengers of the Unknown Vol. 1 #84 (December 1977-January 1978): "To Save a Monster"
Challengers of the Unknown Vol. 1 #85 (February-March 1978): "The Creature from the End of Time"
Challengers of the Unknown Vol. 1 #86 (April-May 1978): "The War at Time's End"
Challengers of the Unknown Vol. 1 #87 (June-July 1978): "Twelve Million Years to Twilight"
Showcase #100 (May 1978): "There Shall Come a Gathering"
World's Finest Comics #267 (February-March 1981): "When Strike the Gravity Masters"
DC Comics Presents #84 (August 1985): "Give Me Power, Give Me Your World"
Crisis on Infinite Earths #5 (August 1985): "Worlds in Limbo"
Crisis on Infinite Earths #7 (October 1985): "Beyond the Silent Night"
Crisis on Infinite Earths #8 (November 1985): "A Flash of the Lightning!"
Crisis on Infinite Earths #11 (February 1986): "Aftershock"
Crisis on Infinite Earths #12 (March 1986): "Final Crisis"
Millennium #8 (February 1988): "The Rising and Advancing of Ten Spirits"
Challengers of the Unknown Vol. 2 #1 (March 1991): "The Challengers Must Die"
Challengers of the Unknown Vol. 2 #2 (April 1991): "Tell the Truth"
Challengers of the Unknown Vol. 2 #3 (May 1991): "Lives of Our Days!"
Challengers of the Unknown Vol. 2 #4 (June 1991): "The Restless and the Young!"
Challengers of the Unknown Vol. 2 #5 (July 1991): "As the World Spins!"
Challengers of the Unknown Vol. 2 #6 (August 1991): "The Beautiful and the Bold"
Challengers of the Unknown Vol. 2 #7 (September 1991): "Another World!"
Challengers of the Unknown Vol. 2 #8 (October 1991): "One Life To Give!"
Eclipso: The Darkness Within #2 (October 1992): "Brilliant Men"
Guy Gardner: Warrior #29 (March 1995): "It's My Party and I'll Fight If I Want To"
Challengers of the Unknown Vol. 3 #8 (September 1997): "Beginnings and Endings" [Flashback]
Challengers of the Unknown Vol. 3 #9 (October 1997): "Through A Glass, Darkly" [Flashback]
Challengers of the Unknown Vol. 3 #7 (August 1997): "Last Days"
Challengers of the Unknown Vol. 3 #8 (September 1997): "Beginnings and Endings"
Challengers of the Unknown Vol. 3 #9 (October 1997): "Through A Glass, Darkly"
Superboy Vol. 3 #62 (May 1999): "Hyper-Tension!, Part Three: Divided By Zero"
Superboy Vol. 3 #63 (June 1999): "Hyper-Tension!, Part Four: For Every World -- A Doomsday!"
Superboy Vol. 3 #64 (July 1999): "Hyper-Tension!, Part Five: Zero Tolerance"
Superboy Vol. 3 #65 (August 1999): "Hyper-Tension!, Epilogue: Out of Hyper-Time!"
Brave and the Bold Vol. 3 #6 (October 2007): "The Lords of Luck, Chapter Six: The Girl Who Knew Too Much"
Brave and the Bold Vol. 3 #7 (December 2007): "Scalpels and Chainsaws"
Brave and the Bold Vol. 3 #8 (January 2008): "Wally's Choice"
Brave and the Bold Vol. 3 #9 (February 2008): "Changing Times"
Brave and the Bold Vol. 3 #10 (April 2008): "Challengers of the Unknown"
Brave and the Bold Vol. 3 #11 (May 2008): "Challengers of the Unknown"
Brave and the Bold Vol. 3 #12 (June 2008): "Sunstroke"