Invisible Woman

Real name: Susan Storm Richards
First Appearance: Fantastic Four #1
Base of Operations: Manhattan, New York City, New York
Occupation: Adventuress
Place of Birth: Glenville, Long Island, New York
Classification: Human
Marital Status: Married
Membership Status: Resigned
Known Relatives: Mister Fantastic (husband), Human Torch (brother), Franklin Richards (son)
Affiliations: Fantastic Four, Avengers

Powers:
The Invisible Woman can - you guessed it - turn invisible. She soon found herself able to turn others and other objects invisible, as well as to negate other invisibilities. Her other power is to produce powerful force fields, able to deflect most forms of attack or enviornmental extremes. She has since been able to manipulate her fields for various effects, such as protecting large areas, forming chutes and cushions, traveling on a moving field, and projecting her fields as ranged attacks (often as sharp or barbed spears.)

History:
Susan Storm, the eldest of two children born to a physician and his wife, grew up comfortably in suburban Long Island. At age 12 she met her future husband, Reed Richards, then a Columbia University graduate student living in her aunt's New York City rooming house. Enamored of the shy but handsome scientist, she would later remeet him when she moved to California when she was 18 to pursue an acting career, and the two began a romantic relationship.

An aeronautical engineer, Richards was working on a starship that would make it possible to travel to other solar systems. When the government threatened to cut off its partial funding of the project, Richards decided to make an immediate test flight. It would have been just him and his friend, pilot Benjamin Grimm -- but Susan and her brother, Johnny, insisted on going along. In space, the starship unexpectedly encountered intense radiation, which caused the crew to abort the flight and crash to Earth. Following the accident, the four discovered that the cosmic radiation had triggered mutagenic changes in their bodies. Now able to turn invisible at will, Sue became a founding member of Reed Richards' team of adventurers, the Fantastic Four. A short time after their marriage, she gave birth to Franklin, their son.

She's also worked with the Avengers at times, but never maintained a full-time membership, as the FF is her true mainstay. The FF and the Avengers maintain close relations and have proven very good allies to each other in the battle against evil.