Jamal Woolard heavily prepared for his role for months, which includes listening and remembering lyrics to a variety of songs by Biggie, gaining weight and vocal lessons at Juilliard School to get the voice right.
When Biggie is rapping right before he lays the vocals down for "Juicy" he is reciting the first verse from "Unbelievable" and is told to stop messing around. The song "Unbelievable" was one of the very last added to the album Ready to Die and according to the producer DJ Premier, he never even wrote anything down, just went in the booth and laid the track down on the spot.
When a teenage Biggie is explaining how his rapping was initially a side-hustle to his drug dealing, the shot shows him rapping in a black and red lumberjack shirt with a hunting cap. This outfit, in fact, matches the one described in the lyrics of the song 'Juicy': 'way back, when I had the red and black/ lumberjack/ with the hat to match'.
The car that is used in the drive-by when Biggie is shot, 2BAI222, is the same plate number that is featured in the first episode of Numb3rs (2005), as well as the same plate number that Ian Watkins, lead singer in the band Lostprophets, uses in the music video for their song "Last Summer" in the car he is driving.
Angela Bassett portrays Biggie's mother Voletta Wallace in this film. She has also portrayed Michael Jackson's mother Katherine Jackson in the mini-series The Jacksons: An American Dream (1992). Both artists have collaborated twice on two of Michael's songs/albums: "This Time Around" from HIStory: Past, Present and Future, Book I (1995), and "Unbreakable" from Invincible (2001). The latter was released 4 years after Biggie's death, and his rap contribution was originally for the 1996 release "You Can't Stop the Reign" by Shaquille O'Neal.