Avatar is a great band I discovered just recently for myself. I really can't tell you their style, there are way too many of them mixed in this Swedish caldron: groove metal, goth metal, industrial... eh, screw that, just check these guys out! Especially live!
The song “Colossus” was taken from their most recent album “Hunter Gatherer” and it really has a Rammstein-ish vibe there. Very powerful and groovy stuff! And the bass part is fun to play, though you should have a 5-string bass for it.