- Converted to Islam in 1963 and was given the name Muhammad Ali (which means Beloved of Allah) by Elijah Muhammad.
- As an amateur, won six Kentucky Golden Gloves titles, two National Golden Gloves titles and the Olympic gold medal for boxing in the light heavyweight division.
- As a pro, won the World Heavyweight Championship three times (the only boxer in history to do so) and compiled a record of 56 wins and 5 losses, with 37 knockouts.
- In 1967, refused to serve in the Vietnam War and was stripped of his title, barred from the ring and sentenced to five years in prison. Three and a half years later, the Supreme Court overturned his conviction and he resumed his boxing career.
- Was diagnosed with Parkinson's Disease in the early 1980s.
- Received the Presidential Medal of Freedom in 2005.
- 2002, Critics' Choice Awards — Freedom Award: Winner
- Maryum — Daughter
- Jamilla — Daughter
- Muhammad Ali Jr. — Son
- Hana — Daughter
- Asaad — Son
- Sonja Roi — Ex-wife
- Odessa Grady Clay — Mother
- Veronica Porche — Ex-wife
- Cassius Marcellus Clay Sr. — Father
- Miya — Daughter
- Yolanda 'Lonnie' Williams — Wife
- Laila Ali — Daughter
- Belinda Boyd — Ex-wife
- Khalilah — Daughter
- Rasheda Ali — Daughter
Season 1, Episode 4
- Birth Name: Cassius Marcellus Clay Jr.
- Birth Place: Louisville, Kentucky, United States
- Birthday: January 17, 1942, Capricorn
- Profession: Boxer, Activist
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