When Bun B’s UGK partner, the late Chad “Pimp C” Butler, entered a jail sentence on an aggravated gun assault charge in 2002, Bun B made guest appearances on numerous albums by other rappers and released a 2005 mixtape titled Legends. Singles featuring a Bun B guest appearance included “They Don’t Know” by Paul Wall, “Gimme That” by Webbie and “I’m A G” by Yung Joc. Bun B also appeared in a documentary titled Screwed In Houston produced by VBS/Vice that details the history of the Houston rap scene.
In October 2005, Bun B’s debut solo album Trill was released. Singles included “Draped Up”, “Git It”, and “Get Throwed”. The album peaked at the number 6 spot on the American Billboard 200 chart and number 1 on the Top R&B/Hip Hop Albums chart.