Dax Riggs, Former Frontman of Acid Bath, Concert Tee Medium. VINTAGE condition - tossed around look. Dax David Riggs is an American musician, best known for fronting the sludge metal band Acid Bath in the 1990s. He has been a part of many projects since then, including Agents of Oblivion and Deadboy & the Elephantmen. In 2007 he began releasing material under his own name.