Sharon Ventura was a former pro-wrestler who fell in love with the Thing and subsequently joined the Fantastic Four as Ms. Marvel. During an adventure in space, she was exposed to Cosmic Rays which mutated her body into a rock-like form similar to that of the Thing. She is not to be confused with Darla Deering (a.k.a. Ms. Thing).

Sharon Ventura

Sharon Ventura was a former pro-wrestler who fell in love with the Thing and subsequently joined the Fantastic Four as Ms. Marvel. During an adventure in space, she was exposed to Cosmic Rays which mutated her body into a rock-like form similar to that of the Thing. She is not to be confused with Darla Deering (a.k.a. Ms. Thing).

All data from the awesome folks at Marvel.