Move are also on Avex, and are sort of Euro-techno in style.
Think '2 unlimited', only 1,0000000 x better!
Malice Mizer are dark J-rock, almost boardering on Goth.
Gackt used to be a member I think.
They also have a member named 'Mana' whose level of fashion is several steps beyond anyone else in the world imo.
Psydoll (
www.psydoll.com) are an industrial band with anime inspired vocals.
They are propably my fave band from Japan after ayu. Also their singer Nekoi is one of the most friendly people you could ever hope to meet.
Mad capsule markets are, I would say the biggest Japanese band in the UK. They mix metal (which I don't normally like) with electronics. They are basically a Japanese Atari teenage riot, but slightly more melodic ^_~
Try and get their latest live album, called '020120' and listen to the song 'Good Girl' for a wicked introduction to them ^_^