MAD CATZ was a Japanese all-girl rock band formed in 2008. They released one single and one mini-album before disbanding in 2009. Members: SAYAKA (Sayaka Yamamoto / 山本彩) - guitar, vocals HISAKO (Hisako Kitawaki / 北脇央子) - drums, vocals ARISA (Arisa Kobayashi / 小林亜莉彩) - bass, vocals Sayaka Yamamoto is now a member of idol group NMB48.