* Mr. Fantastic (Reed Richards): His height is usually depicted as around 6'6" (1.98 meters). He can stretch his body, so he can become much taller or shorter at will.
* Invisible Woman (Susan Storm): She's usually depicted as being around 5'10" (1.78 meters).
* Human Torch (Johnny Storm): He's usually depicted as being around 6'0" (1.83 meters).
* The Thing (Ben Grimm): He's usually depicted as being around 7'0" (2.13 meters) tall.
Keep in mind that their heights have varied in different comics, TV shows, and movies.