There are multiple bands with this name:

1) Monsters is a 3 piece instrumental band from West Palm Beach, Florida.
http://www.myspace.com/monstersband

2) Created in 2008, Monsters was a 5 piece Deathcore band from Chicago, Illinois. They broke up in april 2011.
http://www.myspace.com/monsterswarfare

3) Chiptune/Dubstep/Experimental artist from Nite Owl Records Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.