Main •
Justice Smith as Ezekiel ("Zeke") "Books" Figuero: A smart, resourceful teen, brimming with untapped talent and unrequited love, determined to make his mark on the world. He is in love with Mylene, but her desire to leave the Bronx hinders their relationship. •
Shameik Moore as Curtis "Shaolin Fantastic", or "Shao": A child of the streets; thrill-seeking, unpredictable, and eccentric but above all, enigmatic. He is distrustful of Mylene and sees her as a distraction to Zeke. •
Herizen F. Guardiola as Mylene Cruz: A tenacious girl with an incredible voice who dreams of becoming a disco star, a dream that is far outside the realm of her fiercely religious background. She loves Zeke, but fears that he won't ever leave the Bronx. •
Skylan Brooks as Ronald "Ra-Ra" Kipling: A loyal, respected, and protective friend and brother with his head screwed on tight; he's the voice of reason beyond his years. • Tremaine Brown Jr. as Miles "Boo-Boo" Kipling: A mechanically minded kid who is an irrepressible 40 year-old in a 14-year-old's body. •
Yahya Abdul-Mateen II as Clarence "Cadillac" Caldwell: A "fly gangster", prince of the disco world, and son of the owner of the most notorious after-hours nightspot in the Bronx. •
Jimmy Smits as Francisco "Papa Fuerte" Cruz: A South Bronx political boss who delivers services to his constituents that the city has failed to provide, such as jobs, housing, and healthcare.
Recurring •
Jaden Smith as Marcus "Dizzee" Kipling: The most artistically minded of the Kipling brothers, Dizzee is a graffiti artist who tags as Rumi 411. •
Daveed Diggs as adult Ezekiel "Mr. Books" Figuero: The rap-narrator of the series. His rapping voice is dubbed by hip-hop artist
Nas. •
Giancarlo Esposito as Pastor Ramon Cruz: Papa Fuerte's brother and Mylene's father. The charismatic head of the local Pentecostal church who attracts a flock of followers with his fiery sermons and firm, steady leadership. • Stefanée Martin as Yolanda Kipling: The sister of Boo-Boo, Dizzee, and Ra-Ra. One of Mylene's best friends and a member of the Soul Madonnas. • Shyrley Rodriguez as Regina: Another one of Mylene's best friends and a member of the Soul Madonnas. Outrageous and rebellious, she is in an abusive relationship with Little Wolf. •
Mamoudou Athie as
Grandmaster Flash: A hip-hop recording artist and DJ. In real life, he is considered to be one of the pioneers of hip-hop DJing, cutting, and mixing. In this TV series, he serves as a mentor to Shaolin Fantastic as well as the rest of the Get Down Brothers. •
Karen Aldridge as Adele Kipling: The mother of Yolanda, Boo-Boo, Dizzee, and Ra-Ra. •
Kevin Corrigan as Jackie Moreno: A record producer. In the past, Moreno produced many hit records but years of hard drug abuse and alienating others in the record industry have stalled his career. •
Brandon J. Dirden as Leon: Wanda's boyfriend. •
Michel Gill as Herbert Gunns: A New York City Council member, businessman, and supporter of then-Congressman Edward Koch. •
Zabryna Guevara as Lydia Cruz: The wife of Pastor Ramon Cruz and the mother of Mylene. •
Ron Cephas Jones as Winston Kipling: The father of Yolanda, Boo-Boo, Dizzee, and Ra-Ra. •
Judy Marte as Wanda: Ezekiel's aunt. •
Evan Parke as Wolf. • Salma Salinas as Angela Cruz: Daughter of Pastor Ramon Cruz and Lydia Cruz and sister of Mylene. • Sal Rendino as Stanley Kelly. •
Yolonda Ross as Ms. Green: The caring-but-tough English teacher who nurtures the potential in her students and advocates for them to pursue their talents. • Tory Devon Smith as Little Wolf: Regina's abusive boyfriend and one of the neighborhood's drug dealers. •
Lillias White as Fat Annie: Owner of the notorious Les Inferno club, mother of Cadillac, and boss of the local crime family. She is a sexual predator and is known to be sexually abusive, specifically toward Shaolin. In part two, it is revealed by Shaolin that she sexually abused her son, Cadillac, as well. •
Frank Wood as
Ed Koch: A real life
U.S. Congressman from New York's 18th district and Democratic candidate for
mayor of New York in 1977. Koch has a tough stance against crime (particularly graffiti) and wants to restore public safety back to New York City, so he reluctantly allies himself with Papa Fuerte to help in his campaign in the Bronx. •
Lee Tergesen as Inspector Moran: A police inspector who is on Fat Annie's payroll. He is responsible for Boo-Boo's arrest at the end of part two. He is nicknamed "Moach" by Cadillac. •
Eric Bogosian as Roy Asheton: Record executive and president of Marrakech Star, a disco label, responsible for the success of
Donna Summer and Misty Holloway. • Eric D. Hill Jr. as
DJ Kool Herc: Real life DJ who is credited with originating hip-hop music in the early 1970s in the Bronx. He serves as a mentor for the Notorious Three (The Herculoids). • Noah Le Gros as Thor: A graffiti artist who lives a free lifestyle, and Dizzee's love interest. •
Qaasim Middleton as DJ Big Planet: Member of the Notorious Three (the Herculoids), the mortal enemies of the Get Down Brothers. • RayJonaldy Rodriguez as Silent Carlito: Another member of the Notorious Three (the Herculoids). • Khalil Middleton as MC Luke Skywalker Cage: Another member of the Notorious Three (the Herculoids). •
Julia Garner as Claudia Gunns: Daughter of Herbert Gunns. • Barrington Walters Jr. as Doo-Wop: Street-hardened, roughneck drug dealer. •
Jeremie Harris as Shane Vincent: Mylene Cruz's manager. •
Okieriete Onaodowan as
Afrika Bambaataa: Real life hip-hop DJ and recording artist, and founder of the
Universal Zulu Nation. •
Jamie Jackson as
Robert Stigwood: Real-life Australian-born, British-resident music entrepreneur,
film producer and
impresario. Best known for managing
Cream and the
Bee Gees, theatrical productions like
Hair and
Jesus Christ Superstar, and film productions including the extremely successful
Grease and
Saturday Night Fever.
Guest •
Billy Porter as DJ Malibu: A DJ at Les Inferno. •
Annika Boras as Mrs. Gunns. • Alexis Krause as Leslie Lesgold: Highly influential creator of a weekly "record pool" that selects the hottest disco records to be played by New York club DJs. •
Renée Elise Goldsberry as Misty Holloway: A popular disco singer who is idolized by Mylene. •
Bryce Pinkham as Julien. • Imani Lewis as Tanya. ==Episodes==