There are at least 3 artists known as D.O.D.:
1) D.O.D. (Dance or Die) are a trio of Spanish producers formed in 1997. Their underground anthem 1, 2, 3, 4 on french label Pro-Zak Trax from the same year has been re released several times through over a decade.
2) Do or Die a four piece band from San Francisco, comprising of two women and two men who are no longer playing together.
3) Duo of Darkness a three piece band from Groningen; The Netherlands comprising of three friends rhymin' their way to the top.