Characters : Jack O'Lantern IV (Maguire Beck)

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Maguire wears a blue bodysuit, but when using the Mad Jack identity, the illusion appears to look just like the original Jack O'Lantern, complete with green costume and flaming pumpkin for a head.




5'4" (Estimated)


115 lbs. (Estimated)


Techno-whiz. Able to upgrade Mysterio's technology


Fire-jet glider, and special-effects technology, like Mysterio's


Apart from her illusions, she's helpless

Strength Level

Normal human-level


Pumpkin bombs and hypnotic helmet, hallucinogenic gases and mists, used on intended victims to aid her illusions



Created By
Current Aliases

Mad Jack, Terry Beck

Current Occupation


Dual Identity

Known to the authorities


Unknown, presumably high

Former Bases


Former Occupation


Known Allies

Conundrum, Norman Osborn, Mysterio I (Quentin Beck), Mysterio II (Danny Berkhart) and Maguire (her cat)

Known Confidants

Mysterio I (Quentin Beck) Mysterio II (Danny Berkhart) and Maguire (her cat)

Known Relatives

Quentin Beck, (cousin, deceased)

Legal Status

Has a criminal record

Major Enemies

Spider-Man, Daredevil and J. Jonah Jameson

Marital Status


Place of Birth


Real Name

Maguire Beck

Usual Bases



The original Jack O'Lantern (Jason Macendale) abandoned the identity and became the Hobgoblin. Jack O'Lantern II's identity is still unrevealed. Jack number 2 shares Macendale's methods (physical attacks and weaponry). Mad Jack (the third Jack O'Lantern) shares Mysterio's methods (trickery and illusions).

Jack O'Lantern III was Daniel Berkhart (he was also the second Mysterio.) Maguire Beck (cousin to the original Mysterio), provided tech support, and on occasion, wore the costume herself. This makes her the fourth Jack O'Lantern. She and Daniel kept contact via a radio in their helmets. Maguire and Berkhart were both Quentin Beck's students. Maguire assisted Berkhart while he worked for Norman Osborn. Berkhart also wanted revenge on J. Jonah Jameson for a previous betrayal. Maguire's goal was mainly the adrenalin. Having fun was her key motivator.

The fourth Jack O'Lantern's next appearance was in Spider-Man: The Mysterio Manifesto, after the original Mysterio had commited suicide. She had a "new" Mysterio by her side, tormenting Spidey, J.J.J., Daredevil and Just A Guy Named Joe (Joe Smith). The new Mysterio was none other than Berkhart, re- enacting his first super-villain role. Maguire had become the sole Mad Jack. Together, they wanted vengeance over those who they felt had wronged Quentin Beck. (Of course, Berkhart wanted J.J.J. in the mix as well.) Maguire was captured by Spidey and Daredevil, while Berkhart escaped.

Maguire is allegedly dead, killed by Jack O'Lantern VI, who claimed to have killed everyone else who had been called by that name.

Appears In...

Jan 2001 App: Spider-Man: The Mysterio Manifesto #1
Feb 2001 App: Spider-Man: The Mysterio Manifesto #2
Mar 2001 App: Spider-Man: The Mysterio Manifesto #3
  Origins finally told.

Image Gallery

The assistance of the Marvel Chronology Project is gratefully acknowledged.

Some of the above information is extracted from the various versions of the Official Handbook to the Marvel Universe and the more recent Marvel Encyclopaedias.