What key details about pigface can be extracted from the following bio? Bio: pigface is an industrial rock supergroup formed in 1990 by martin atkins and william rieflin .
- years active is 1990 -- present- caption is members california ; left to right : chris connelly , nivek of ogre , martin atkins pigface in 1991 in palo alto ,- origin is chicago , illinois , united states- label is invisible- genre is industrial rock- name is pigface- background is group_or_band- image is pigface_1991 . jpg- current members is see '' members ''- associated acts is public nine inch nails , skinny puppy image ltd. , ministry , killing joke ,