Rotting Christ has been around for longer for Immortal, Emperor, Burzum, plus a whole lot of other bands. Euronymous was actually going to sign them to Deathlike Silence
Productions before he died, so yes, they are Black metal (Metal-Archives even thinks so).
So anyway, it's a great greek black metal band with a Gothic type feel to their music. Early Demos were influenced more by Grindcore, before they became a fully blown black metal band. Like I said, They've been around for more years then their
Norwegian Black metal musicians so they are highly
influential. Lyrics usually talk about Greek Mythology and love which is definitely something new in black metal.
100x better than Dimmu or Cradle.