Artist Biography Available in: Acid Mammoth is a doom metal band from Athens, Greece. The band was formed in 2015 by Chris Babalis Jr. (Vocals & Guitars) and Dimosthenis Varikos (Bass), good friends since high school, with a deep love for Sabbath and other heavy music. After a series of jams and recordings, they were joined by their very good friend Marios Louvaris (Drums) and Chris Babalis Sr. (Guitars), Jr.'s father.