By James Hibberd
Updated August 29, 2011 at 05:08 PM EDT

Comedy Central has announced its first round of celebrity roasters for Charlie Sheen’s big event next month.

Not exactly huge celebrities, but as roastmaster Jeff Ross pointed out, it’s all about who can bring the funny: Comedy Central has enlisted TMZ founder Harvey Levin, Jackass star Steve-O, and heavyweight boxing champion Mike Tyson. Comedians Anthony Jeselnik and Ross will also take the stage for the show, which airs the same night as CBS’ Two and a Half Men premiere, Sept. 19.

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