; Paul Gray ( # 2 ) Active : 1995 â `` present Plays : bass , backing vocals Performed in : all Slipknot albums Paul Gray was a member of the original band formed in 1995 . ; Paul Gray ( # 2 ) Active : 1995 â `` 2010 Instruments : bass , backing vocals Release contributions : all Slipknot releases Paul Gray was a member of the original band formed in 1995 .