Michael Phelps became the most decorated Olympian of all time with 21 medals.
Missy Franklin became a three-time Olympic gold medalist.
McKayla Maroney, Kyla Ross, Aly Raisman, Gabby Douglas, and Jordyn Wieber,
won the team all-around gold medals.
Gabby Douglas is an American artistic gymnast who won gold medals in 2012 in both the individual and team all-around competitions. Douglas is the first African-American and first non-Caucasian female in Olympic history to become the individual all-around champion, and the first American gymnast to win gold in both the individual all-around and team competitions at the same Olympic