Wikipedia
Gallhammer
Gallhammer is a Japanese extreme metal group that draws on black metal, doom metal, and crust punk. They formed in Tokyo in 2003, and have released three studios albums.
The current group lineup is Vivian Slaughter (vocals, bass guitar) and Lisa Reaper (vocals, drums); the original lineup included Mika Penetrator (vocals, guitar). All of the members are female, which is rare in their genres.