Kevin Hart as Self - Roastmaster

Justin Bieber as Self - Roastee

Will Ferrell as Ron Burgundy

Chris D'Elia as Self

Natasha Leggero as Self

Snoop Dogg as Self

Hannibal Buress as Self

Ludacris as Self

Shaquille O'Neal as Self

Jeff Ross as Self

Martha Stewart as Self

Pete Davidson as Self

Dave Chappelle as Self

Lauren Ashley Berry as Self

Jillian Bell as Self

Shaniece Cole as Self

Yuval David as Self

Ray Hounsell as Self

Kyle Kinane as Self

Debra Lee as Self

Marcus Natividad as Self

Katharine McPhee as Self

Trevor Noah as Self

Joshua Paule as Self

Jon Slajer as Self

Gloria Allred as Self

Blake Anderson as Self

Rob Simmons as Self

Ashley Benson as Self

Scooter Braun as Self

Anders Holm as Self

Kendall Jenner as Self

Carly Rae Jepsen as Self

Pattie Mallette as Self

Kourtney Kardashian Barker as Self

John Legend as Self

Tito Ortiz as Self

Jaden Smith as Self

Chrissy Teigen as Self

Kate Walsh as Self

Chris Paul as Self