Wreckx-N-Effect was a New Jack Swing Hip-Hop group from the United States who had the multi-platinum hit "Rump Shaker" in 1992/1993, which was produced by Teddy Riley.

The group, originally composed of then adolescent Aqil "A-Plus" Davidson, Keith "K.C." Hanns, Brandon Mitchell and Markell Riley, was formed around 1988 as Wrecks-N-Effect. Their first release, an eponymous EP of six tracks for Atlantic Records, included the singles "Go For What You Know", "Let's Do It Again" (which sampled The Staple Singers hit song), and a self-titled track sampling Jimmy Castor's "Bertha Butt Boogie". They received little promotion from Atlantic however, and, with the help of one-time manager and alleged gangster Gene Griffin, the group jumped ship for Motown Records. By the time they released their self-titled debut album the following year, "K.C." had left and the group had become a trio. Wrecks-N-Effect was produced by producer/songwriter Teddy Riley (brother of Markell Riley), and rapper/producer Redhead Kingpin; the album reached #16 on the Top R&B/Hip-Hop Albums chart and #103 on The Billboard Top 200 chart. The singles "Juicy" and "New Jack Swing" were released, with "New Jack Swing" reaching #1 on the Billboard Rap chart. Tragically, Mitchell was killed in a shooting incident shortly after its release in 1990.

Jerome Young (born January 3, 1963) is an American professional wrestler, better known by his stage name New Jack in ECW. He is known for his willingness to take dangerous bumps and his stiff hardcore wrestling style, often taking high risks and "shooting" on opponents, though he is only known to shoot on opponents who are deemed disrespectful in the ring. He is also known for having his theme song ("Natural Born Killaz" by Ice Cube and Dr. Dre) play throughout his matches in ECW. The inspiration for his ring name came from the movie New Jack City.

Young trained under Ray Candy and debuted in 1992 in the Memphis, Tennessee-based United States Wrestling Association (USWA), where he adopted the name New Jack. He went on to form a tag team, The Gangstas, with Mustafa Saed in Smoky Mountain Wrestling (SMW). The Gangstas took part in several controversial angles, on one occasion using affirmative action to enable them to win matches with a two count pinfall as opposed to the conventional three count. They engaged in a long feud with the Rock 'N Roll Express (Ricky Morton and Robert Gibson). During their stint, the NAACP would picket outside the performance venues because of the "Gangsta" gimmick, claiming that no racial violence had occurred in the Tennessee area for years, and they didn't want the reputation of gangsters to be put into the Tennessee area.

Edward Theodore Riley (born October 8, 1967), professionally known as Teddy Riley, is a Grammy Award winning, American singer-songwriter, musician, keyboardist, and record producer credited with the creation of the New Jack Swing. Through his production work with Michael Jackson, Bobby Brown, Doug E. Fresh, Today, Keith Sweat, Heavy D., Usher, Jane Child, etc. and membership of the groups Guy and Blackstreet, Riley is credited with having a massive impact and seminal influence on the formation of contemporary R&B, hip-hop, soul, and pop since the 1980s. Riley is reputed to be worth $80 million due to his productions."

Teddy Riley was raised in St. Nicholas Houses, Harlem, New York. Riley, a child prodigy since the age of 5, began playing instruments in the church. His uncle, who owned the famed Harlem club The Rooftop, built a studio in the club in which Riley would spend most of his time while growing up. By 14, upstart New York rappers began making music to his tracks. Under the guidance of local music producer Gene Griffin, Riley formed the short-lived group Kids At Work. At the age of 17, Riley produced Kool Moe Dee's 12" single, "Go See the Doctor". Released on an independent label in 1986, the song became a crossover hit, reaching #89 on The Billboard Hot 100. Riley had previously worked on the production of Doug E. Fresh and the Get Fresh Crew's "The Show" in 1985. His brother in law is popular R&B crooner Omar Chandler.