Conversation so far:
was Missiah the last album?
His sixth installment in the Mixtape Messiah series was to be a "prelude" to Venom.
what year did messiah release?
The first disc from Mixtape Messiah 7 was launched for free download on August 4, 2009, just after 11:30 pm EST, while Disc 2 was released on August 6, 2009.
when did venom come out?
Venom has been confirmed as cancelled as Chamillionaire has parted ways with Universal.
what artist did he work with?
The first single from Venom was initially planned to be "Creepin' (Solo)", which featured Ludacris.
why did he leave universal?
CANNOTANSWER.

Question: did he work with anyone else?
Self-contained rewrite: Other than Ludacris, did Chamillionaire work with anyone else?