Bigg Jus (also known as Bigg Justoleum or Lune TNS) is a rapper from New York City, formerly a member of Company Flow along with Mr. Len and El-P. After the late-1990s breakup of Company Flow, Bigg Jus formed the (now defunct) Subverse Records and began to pursue his solo career.

Graffiti is a common theme in his lyrics as he used to be a graf artist himself.Bigg Jus moved to Atlanta, where he continued his musical career with his self-produced EP Plantation Rhymes. Moving on to the creation of his LP, he put together an album known as Black Mamba Serums, which was scheduled to appear, coincidentally, on September 11th of 2001.

However, shortly before the release, Jus decided to pull the album, unsatisfied with its content. Jus went back to the studio and recreated the album more to his liking; he released this version as Black Mamba Serums v.

2.0 in June 2004. Just to prove a point to his listeners, he included the original album mp3s as bonus content.Bigg Jus's approach to political rap is unique, in that he is uncompromising and intense in his message, whist avoiding the tiresome didactics of much 'conscious' rap.

Check out the track 'Silver Back Mountain King' for a good example of his lyrical intensity. In late 2005, Bigg Jus combined with long-time friend DJ GMAN to produce Poor People's Day, which was released on Mush Records.

In early 2006, Bigg Jus admitted that he and El-P were working on new Company Flow material to be released for the occasion of the 10 year anniversary of Funcrusher Plus. (In October 2007, Jus made an appearance onstage together with El-P at the CMJ Music Festival in New York, but a full scale Company Flow reunion does not seem likely, due to the differences of ambition of the groups former members.

)Bigg Jus is also a member of hip-hop group NMS, along with Orko Eloheem. Both solo and with NMS, Jus has released records on the Big Dada and Mush Records labels.Fellow Mush-signed artist Thavius Beck has said he is working on productions for Jus' next solo album.

In an august, 2006 interview Jus himself claimed to be working on an album "with a dude named Kingston", (Kingston Maguire of Blue Sky Black Death?).Bigg Jus' newest album titled Machines That Make Civilization Fun is scheduled to be released on May 8, 2012.