Rucker was born in Pittsburgh, Pennsylvania, the son of Malaya (née Ray) and Eric Rucker. He has partial ancestry from Barbados. Rucker spent his formative years in the greater Washington, DC, Maryland area. He hails from a very dedicated and supportive immediate and extended family. He first had an interest in acting after he was placed in many child pageants. His first acting role was as Martin Luther King in the 4th grade. He was in the drama club in 7th grade and then attended high school at the Duke Ellington School of the Arts in Washington, D.C. Rucker studied at Carnegie-Mellon University and Duquesne University. His undergraduate degree is in Information Technology and Business and his graduate degree is in Education and Curriculum Development. Lamman Rucker also was an assistant drama teacher at a Pittsburgh charter school, Northside Urban Pathways, now known as UP. He played basketball in college and semi-pro ball for a short time after that. He is the oldest of three children, having a younger sister and his brother who died in 1992.
Rucker's major role came in 2002 when he assumed the role of attorney T. Marshall Travers on the CBS soap opera As the World Turns opposite Tamara Tunie. He left the series the following year and portrayed Garret Williams on ABC's All My Children in 2005. He has starred in a few of Tyler Perry's productions such as a guest role on Tyler Perry's House of Payne, the film version of Why Did I Get Married? alongside Perry, Janet Jackson and Jill Scott, as well as appearing in a small role in the film version of Meet The Browns as Vera's adult son, Will. He also had a starring role on Perry's second sitcom Meet the Browns reprising his role as Will. This time, Will has a much larger role (compared to his part in the movie) having just gotten married to a co-worker. To promote his work in Perry's films, Rucker appeared on The Mo'Nique Show March 14, 2010, and discussed the fear and beauty of shooting at a location so close to water, yet so close to home.
Rucker remains active with a variety of grassroots, civic, and international organizations that focus on the improvement of critically challenged communities in the US. He is represented by D.C. based sports and entertainment attorney E. Lindsey Maxwell II, Esq. The two met in during their college years while in Pittsburgh. Two years ago, Mr. Rucker and Mr. Maxwell formed Black Tiger Edutainment, a company devoted to entertainment ventures and production of independent films. Earlier this year, Mr. Rucker and Mr. Maxwell teamed up with Dallas spa owner, Thai Morrisson, to form a new skin care line called Forplai (www.forplai.com).