The name of this comedy metal band (technically known as parodic metal) is a play on words from the band Manowar. They hail from the Italian capital, Rome, and their clips and their are funny (as one might expect from a parodic metal band)
Formed in 2003, Nanowar of Steel's line-up is Mohammed Abdul (Valerio) on guitar and keyboard, Gattopancer666 (Edoardo) on bass and guitar, Uinona Rider (Alessandro) on drums and guitar - presumably not at the same time, Potowotminimak (Carlo Alberto) vocals and they have a guy called Baffo (Raffeolo) who is responsible for sound effects.
Their most recent release was a 2016 EP called Tour-Mentone Vol.1. This track I'm Heavy has a little fun with Pharrell William's hit I'm Happy.