Carlos Barrett (born 1984, better known by his stage name Sleeper Da Poisonous) is a rapper from South London UK. He is the CEO of AON (All Or Nuffin' Ent.) a collective of singers, rappers and producers filled with tenacity. Artists Within this group include 808 DONZ also known as Y.P which is the main producer for the group, Chase, Tu, TJ, Lyrik, GB and Sleeper Da Poisonous Himself show a vast amount of versatility as well as individuality to each of their style and sound which makes it a nice blend. Born Carlos Barrett in the early 80's, growing up around many genres of music which was heavily influenced from a house hold of music such as Jamican DanceHall, Motown, Rock, Pop, Hip-Hop, R&B, Jungle, Uk Garage (Grime) and Drum & Bass. Sleeper Da Poisonous is known for his vast amounts of mixtape releases, expressing his versatility aswell as show casing other artists featured on the CD's. All mixtape releases was given away for free promotional use. Formally known as Sleeper Da Dan of Nasty Squad a well known Uk Garage Group (Grime) / Street Gang based in Norwood, South London in the early 2000's. At this early stage of his musical career he worked with well known artists of today, such as Dice Recordings Big Narstie, Tempman from PDC as well as multiple performances across England and a regular radio slot on Supreme Fm. 2004 is when Sleeper Da Poisonous was formed, due to his decision of pursuing his love for Hip-Hop. he felt he needed a solid name to fit the full transition without straying away from the essence. During this stage Sleeper Da Poisonous was voicing many beats from an unknown producer by the name of Edd, which we now know today as 808 DONZ. This is when All Or Nuffin' was formed with artists to follow such as Tu and Chase was the next artist to join the group. There was many other artists and producers to join as the years surpassed. Sleeper Da Poisonous has also worked with many artists within the music industry in Europe and North America. Such as XXL Magazine feature "NOE" of ByrdGang Records, British Rapper Ish, DanceHall Reggae artist Major Tunder, D-Cize of The Dining Table, Dining Table formally know as Shank A Man Crew, British Rapper Blemish and controversial Uk Hip-Hop artist Big Dirtz. Even with a personal producer at hand Sleeper Da Poisonous has worked with an array of producers from around the world. LostDreamer (Turkey), Psycho Beatz (Austrailia), 76OS (France), GSM (UK), Rashness (Turkey), Blue City (USA) and DJ's such as Mykal Million (RobeWorld), DJ SwitchMan, DJ Rocky and many features on mixtapes from ATL Mixtape Award Nominee DJ Ames. Sleeper Da Poisonous had over 100,000 downloads in total of his 6 mixtape series "Mixtape Marathon". Mixtape Marathon was a set of 6 CD'S released over 6 months and included the following titles, Big Brixton, The Gift And The Curse, F**k Your Life, Death Note and No Rest For The Wicked. Not including previous releases such as Clockwork Orange, Bringing The Hood With Me Part 1 and 2 released in early 2008. After taking a break from the mixtape scene, Sleeper Da Poisonous has been hard at work in the studio on original material. With single releases, features and appearances on "Beg For Mercy" and "The World" by Big Dirtz & Sleeper Da Poisonous featuring David Raye. 2013 seems to be a year we will see this artist flourish with releases due to come, "808 DONZ - End Your World" is an anticipated release which will give an insite on what's in the works for the debut album "Return Of The Moors". Release dates have not yet been set for the "Return Of The Moors" album.