Justin Bieber asked to celebrate his 21st birthday with a "Comedy Central Roast" and the network agreed. He'll face barbs from a variety of entertainers including the "Roast Master General" himself - comedian Jeff Ross.

Ross will join Kevin Hart who will serve as the official Roast Master for the "Comedy Central Roast of Justin Bieber." Hannibal Buress has also signed on to take down the pop singer, according to TMZ.

The 49-year-old Ross has participated in every roast since Pamela Anderson in 2005 (he did not take part in the events for Denis Leary and Jeff Foxworthy). He promised the "best roast ever" for Bieber earlier this month, and nothing will be off limits, he told TMZ.

This will be the first "Comedy Central Roast" for Buress. The 32-year-old comedian drew mass attention last fall when he called Bill Cosby a rapist during his stand-up act in Philadelphia. Video of the set went viral and has led to nearly 30 women accusing Cosby of sexual assault or other offenses.

Hart stepped up to perform the duties of Roast Master even though he doesn't "normally do roasts," but no one in attendance will be safe when the insults start flying.

"I had to step out for my guy Biebs...It's his big 21," he said in Comedy Central's announcement on Feb. 9. "It's about to be operation roast everyone's ass."

Kent Alterman, president of content development and original programming for Comedy Central, added, "They say only a good friend would verbally eviscerate another good friend for all his vulnerabilities. Kevin Hart is a very good friend."

The "Comedy Central Roast of Justin Bieber" will air on Monday, March 30 at 10 p.m. on Comedy Central. The show will tape at Sony Studios on March 16.