Short answers, pulled from the story.
The Fantastic Four debuted in Fantastic Four #1, cover-dated November 1961, published by Marvel Comics. The issue was an unexpected success and helped establish the Marvel Method of comic production.
Both Stan Lee and Jack Kirby are credited as creators of the Fantastic Four, though they gave conflicting accounts of their respective contributions. Lee described writing a detailed synopsis for Kirby to follow, while Kirby claimed the characters and core ideas were primarily his. Comics historian Mark Evanier, who worked with Kirby, concluded that the considered opinion of their contemporaries was that the series was created by "Stan and Jack" with no further division of credit.
Mister Fantastic (Reed Richards) can stretch his body to incredible lengths and shapes. The Invisible Woman (Sue Storm) can render herself and others invisible and project powerful force fields. The Human Torch (Johnny Storm) can generate flames, surround himself with fire, and fly. The Thing (Ben Grimm) possesses tremendous superhuman strength and durability due to his stone-like flesh.
The three-part Galactus Trilogy, beginning in Fantastic Four #48 in March 1966, is most often cited as Lee and Kirby's finest achievement on the title. The story chronicles the arrival of Galactus, a cosmic giant who wanted to devour Earth, and his herald the Silver Surfer. Fantastic Four #48 was ranked 24th in the 100 Greatest Marvels of All Time poll of Marvel's readers in 2001.
In 2022, a copy of the original Fantastic Four #1 sold at auction for 1.5 million dollars. In 2024, the highest-graded copy, rated 9.6, sold at Heritage Auctions for a record 2.04 million dollars.
The Fantastic Four: First Steps, released in the United States on the 25th of July 2025, stars Pedro Pascal as Reed Richards, Vanessa Kirby as Sue Storm, Joseph Quinn as Johnny Storm, and Ebon Moss-Bachrach as Ben Grimm. All four are scheduled to return in Avengers: Doomsday, set for release on the 18th of December 2026.