Kevin Hart
as Self - Roastmaster
Justin Bieber
as Self - Roastee
Will Ferrell
as Ron Burgundy
Chris D'Elia
as Self
Natasha Leggero
Snoop Dogg
Hannibal Buress
Ludacris
Shaquille O'Neal
Joel Gallen
Director
Several roasters, and the master himself Kevin Hart, make fun of Justin Bieber.
