The best replacement for gwar is lordi.

The best alternatives to gwar are rated as following:
★★★★★  lordi
★★★★★  aquabats
★★★★  slipknot
★★  nardwuar
★★  icp

Your alternative for gwar is not listed? Suggest!
Speaking about gwar, one probably shouldn't forget about cannibal corpse.

Other search terms related to gwar and their ratings are:
★★★★★ cannibal corpse
You have in mind a companion for gwar and it is not yet here? Propose!



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gwar
lordi
aquabats