Once a magister in the court of the Sunking, Mi'irku found that life too dull and joined the ranks of the Benefactors. Ever the rebel, she travelled often and made friends in unlikely places. Though her devotion to Mnesthes was often questioned, Mi'irku always made it clear that Mnesthes symbolized her love for freedom and would not allow others to question her faith.
She served under Seranidan when Seranidan led an attack on Boralus. The Vision revealed to Mi'irku that if she truly wished to serve Mnesthes, she would have to betray the Benefactors and join the Malefactors instead. So that is what she did.