For those unfamiliar with the comics, the Fantastic Four are Reed Richards (Mr. Fantastic), his best friend Ben Grimm (The Thing), wife Sue Richards (The Invisible Woman) and her brother Johnny Storm (The Human Torch). The four do more adventuring and exploring than planet-saving, but have some fabulous technology and swanky offices at the Baxter Building in New York.
Marvels Mr. Fantastic from the Fantastic Four by Toy Biz - Character Description
Possessing a mastery of mechanical and electrical engineering, chemistry, all levels of physics, and human and alien biology, Richards is often considered the most intelligent human being in the Marvel Universe. He is the inventor of the spacecraft bombarded by cosmic radiation on its maiden voyage, granting the Fantastic Four their powers. Richards gained the ability to stretch his body into any shape he desires.