David "D-Flex" Seisay is most known for the rapper behind the Rob'n'Raz eurodance hits in the early 90's like "In Command". D-Flex was part of the Rob'n'Raz team even when they were called Rob'n'Raz DLC, which then stood for "Lutricia and David Combination". They had huge hits like "Clubhopping" and "Dancing Queen". David also featured as the rapper on the songs "Mona Lisa", "Whose Dog Is Dead?" and "Take A Ride", which were more of eurorap-type songs that came out in 1995-1996. Then the group were called Rob'n'Raz Circus.
David's single releases has been "Friday Night Is Here" and "Don't Disrespect" and came out in 1999-2000. He was also a part of the crew B-Boys International, that released the song "One Step Closer" in 2005.
He works as a personal trainer and have helped a lot of Scandinavian celebrities to get in shape.