Boxer Gennady "GGG" Golovkin talks about how he got started in the sport, where he learned his style of boxing, and throwing out the first pitch at Dodgers Stadium.

In this episode of UCN's orginal series WHO IS..., sportscaster Al Bernstein talks about the early days of his career as a writer and sports announcer, how he got started as a singer, when he joined the rodeo, and his influences.

In this episode of UCN's original series WHO IS..., announcer Michael Buffer talks about his Hall of Fame career as a boxing personality, the coining of his famous phrase, "Let's get ready to rumble," how he learned about showmanship and timing as well as his numerous business endeavors.

In this episode of "Who is..." Publicist Bill Caplan talks about what it is like to work in the business of professional boxing, including stories about Muhammad Ali, George Foreman, Don King, the Four Kings, Gennady "GGG" Golovkin and Oscar De La Hoya. Bill looks back at the Rumble in the Jungle.

In the next episode of WHO IS..., Boxing Promoter Kathy Duva, Founder of Main Events, along with her late husband Dan Duva. As the first major female promoter in boxing, Kathy Duva is a pioneer and trailblazer for women in sports.

In episode 6 of UCN's original series "Who Is...?" K2 Promotions Managing Director Tom Loeffler talks about his rise in the boxing industry, helping the Klitschko brothers get their break, and working with world champion Gennady "GGG" Golovkin.