
The Fantastic Four is a fictional superhero team appearing in American comic books published by Marvel Comics. The team debuted in The Fantastic Four #1, helping usher in a new level of realism in the medium. It was the first superhero team created by artist/co-plotter Jack Kirby and editor/co-plotter Stan Lee, who developed a collaborative approach to creating comics with this title.

The Baxter Building is a fictitious 35-story office building appearing in American comic books published by Marvel Comics. The building is depicted in Manhattan, and its five upper floors house the Fantastic Four's headquarters.
Fantastic Five is a fictional superhero team appearing in American comic books published by Marvel Comics. The team exists in the MC2 Universe, an alternate future to the Marvel Universe. A continuation of the Fantastic Four, the team was originally composed of the Human Torch, his wife Ms. Fantastic/Lyja, the Thing, Big Brain, and Psi-Lord.

Fantastic Force is a fictional superhero team appearing in American comic books published by Marvel Comics. It is a spin-off of the Fantastic Four. The team had its own title, which lasted for eighteen issues from November 1994 to April 1996. Its average monthly sales for 1995, its only full year of publication, were 33,675 copies. The title was revived for a miniseries involving a new team in April 2009.

Future Foundation is a fictional organization appearing in American comic books published by Marvel Comics. Created by writer Jonathan Hickman, the team first appeared in Fantastic Four #579 and stars in the series FF, written by Hickman and illustrated by Steve Epting. The Future Foundation is a philanthropic organization created by Mister Fantastic to better serve humanity's future.

H.E.R.B.I.E. is a fictional robot appearing in American comic books published by Marvel Comics. The character was initially conceived for the 1978 Fantastic Four animated series and was integrated into the comics continuity shortly afterwards. The character is usually depicted as an ally of the Fantastic Four.
Latveria is a fictional country appearing in American comic books published by Marvel Comics. It is depicted within the storylines of Marvel's comic titles as an isolated European country ruled by the fictional Supreme Lord Doctor Doom, supposedly located in the Banat region. It is surrounded by the Carpathian Mountains, and also borders Symkaria to the south. Its capital is Doomstadt.

Willie Lumpkin is a fictional supporting character appearing in American comic books published by Marvel Comics. The character is best known as the mailman of the Fantastic Four in their self-titled comic book.

Maker, also known as Ultimate Reed Richards, is a fictional superhero turned supervillain appearing in American comic books published by Marvel Comics. He is the Ultimate Marvel's version of Mister Fantastic, initially presented as a heroic, morally altruistic and scientifically-driven superhero and a younger, modernized alternate version of Reed Richards, who later turns into the villainous Maker, after enduring a series of tragedies and immense mental trauma; he eventually becomes part of the regular Marvel Universe, serving as an enemy and evil foil to his parallel universe counterpart, serving as an example of what his Earth-616 counterpart could have been had he used his powers and intellect for evil and malice.

Maximum Fantastic Four is a 224-page coffee table art book focused on the art of Jack Kirby in 1961's Fantastic Four #1. This project was conceived of and orchestrated by Walter Mosley. It has been reprinted numerous times.

Alyssa Moy is a fictional character appearing in American comic books published by Marvel Comics. She is a former lover and colleague of Reed Richards. Alyssa works as a scientist, and has a genius-level intellect nearly equal to that of Reed.

Nova is a fictional character appearing in American comic books published by Marvel Comics.

The Time Variance Authority (TVA) is a fictional organization, a group of timeline monitors appearing in American comic books published by Marvel Comics.

Ultimate Fantastic Four is a superhero comic book series published by Marvel Comics. The series is a modernized re-imagining of Marvel's long-running Fantastic Four comic book franchise as part of the Ultimate Marvel imprint. The Ultimate Fantastic Four team exists alongside other revamped Marvel characters in Ultimate Marvel titles including Ultimate Spider-Man, Ultimate X-Men, and The Ultimates.

Sharon Ventura, also known as She-Thing, is a fictional character appearing in American comic books published by Marvel Comics. She has used the pseudonym Ms. Marvel and has served as a member of the Fantastic Four and the female wrestlers known as the Grapplers.

Kristoff Vernard is a fictional character appearing in American comic books published by Marvel Comics. He has been involved mainly with the Fantastic Four, as enemy, ally and even short-term member.

The Yancy Street Gang is a fictional street gang appearing in American comic books published by Marvel Comics. It is occasionally featured in the Fantastic Four comic book. The gang is often seen as an antagonist for the Thing, showering him with insults, and occasionally heads of lettuce. In their early appearances, they were an "off-screen" presence, with only their hands and arms visible on-panel.