Eight years later, Brooklyn, New York’s Colbert, now a seasoned veteran, is aiming to make a new impression in a new documentary series, “Boxing: Raw & Uncut,” which premiered earlier this month on the streaming platform Tubi. In the first installment of a three-part series, documentarian Rodrigo Belone brings Colbert back to his neighborhood in Flatbush, Brooklyn, detailing the fighter’s childhood shenanigans and rough introduction to the sport through the voices of Colbert, his trainer Aureliano Sosa and others who witnessed his rise to prominence.