What is the name of a foreign boxing man who has a very soulful walk?

I think the person you are talking about is Muhammad Ali, because he has an original step butterfly step.

Muhammad Ali, born January 17, 1942 in Louisville, is an American boxer.

He began his boxing career at the age of 12. In 1964, at the age of 22, Ali defeated Sonny Liston to win the heavyweight title for the first time. In the same year, he defeated Liston again, and from then on, professional boxing entered the Ali era. Thereafter, Ali won the heavyweight title 22 times over a 20-year period.Ali retired from boxing in 1981 and soon developed Parkinson's disease.?

On June 4, 2016, Ali died at the age of 74 in a local Phoenix hospital after a long illness.

The traditional Muslim funeral service for Boxing Champion Ali was held Thursday, June 10, 2016, in his home city of Louisville, Kentucky, launching a two-day farewell to the beloved boxing legend and civil rights hero.

His mastery in the ring was so awe-inspiring that some described his punches, as sharp as a bee's sting, and his footwork, as light and nimble as a fluttering butterfly. And his original footwork is also figuratively known as the butterfly step.

References

Tencent Video. Tencent Video[cited 2018-1-11]