The name change occurred after Wrathchild America was dropped from Atlantic Records in 1992, and was accompanied by a slight change in musical style, adopting a mixture between alternative metal and groove metal (similar to those of Pantera and Helmet) while also retaining some of the thrash metal roots of Wrathchild America.
The name "Souls at Zero" was taken from a chapter in the book The Great and Secret Show by horror writer Clive Barker.
The name was originally intended for Shannon's and John "Tumor" Fahnestock's side project MF Pitbulls which also included 3/5 of the future band Snot.
Shannon Larkin left the band in 1994 to fill the drum seat in Ugly Kid Joe; he currently plays in Godsmack.
He left to join Snot, and currently plays in TheSTART, ...And You Will Know Us by the Trail of Dead, Normandie and Bad Religion.