The Maenads of Troniac were designed and deployed by the forces of General Zarlok and the Engine of Negation. An intelligent life-form would be infected with a special virobot that would induce a berserk rage.
The Engine of Negation
The Engine of Negation is an extremest sect of the Cult of Troniac, founded by General Zarlok. The Engine's purpose was to eliminate organic life from the galaxy.