Jamie Foxx, Quentin Tarantino, Tyler Perry and Laz Alonzo have been added as presenters. They join a lineup that already includes Kevin Hart, Cedric the Entertainer, Taraji P. Henson and Meagan Good.
The Samuel L. Jackson-hosted event will feature performances by D'Angelo, Usher, Chris Brown, Nicki Minaj, Rick Ross, Wale, Meek Mill, 2 Chainz, Big Sean and G.O.O.D. Music.
Also set to perform are BET's "Sunday Best" judge Yolanda Adams, season four winner Amber Bullock, Season two winner Y'Anna Crawley and Season two runner-up Jessica Reed.
Kanye West leads this year's nominations with seven, followed by Jay-Z with five.
The 12th annual BET Awards will be held at The Shrine Auditorium in Los Angeles on Sunday at 8 p.m. ET.