How can a show featuring Marilyn Manson and Alice Cooper get even better for shock rock fans? With the addition of GWAR.

More dates for the two shock rockers’ previously confirmed tour have emerged, and GWAR will at least be opening the show at the Merriweather Post Pavilion in Columbia, MD on June 17. GWAR confirmed the news last week via Facebook, saying “This should be fun…even though they are making us play on the kiddy stage. Making us play by giving us tons of greasy cash.” Not exactly sure what they mean by “kiddy stage,” but it’s nonetheless cool to see Marilyn Manson, Alice Cooper and GWAR’s names on the same bill.

Check out an updated rundown of dates for Manson and Cooper’s Masters Of Madness Tour after the jump.

06/03 Morrison, CO – Red Rocks Amphitheatre

06/04 Salt Lake City, UT – USANA Amphitheatre

06/06 Los Angeles, CA – Gibson Amphitheatre at Universal City Walk

06/07 Tucson, AZ – AVA Amphitheatre

06/08 El Paso, TX – Don Haskins Center

06/10 Grand Prairie, TX – Verizon Theatre

06/13 Cleveland, OH – Jacobs Pavilion

06/15 Montebello, QC – Marina Montebello

06/17 Columbia, MD – Merriweather Post Pavilion (feat. Gwar)

06/18 Reading, PA – Reading Eagle Theater at the Sovereign Center

06/20 Gilford, NH – Meadowbrook U.S. Pavilion

06/23 Pittsburgh, PA – Stage AE

06/25 St. Charles, MO – Family Arena

06/28 Rockford IL – BMO Harris Bank Center