Christy Martin

Self - Professional Boxer

Mike Tyson

Self - Heavyweight Boxer

Laila Ali

Self - Professional Boxer

Don King

Self - Boxing Promoter (archive footage)

Jack Nicholson

Self (archive footage)

Jay Leno

Self (archive footage)

George Foreman

Self - Professional Boxer (archive footage)

Gloria Allred

Self - Women's Rights Attorney (archive footage)

Muhammad Ali

Self - Professional Boxer (archive footage)