She attacks her enemies with raw power! She protects her Universe with pure strength! but most importantly, She stops evil in it's tracks! But not for your typical "Hero reasons" She just likes to beat up weirdos who think evil is cool. she doesn't do out of bravery, or pure of heart reasons. She's in no way a typical hero. more of a... Anti-hero with a motive, what are those motives? no one knows. But she aid's Zoey in her darkest hours when she is in need of help.
Retrospectively; Voan and Mono have been battling each other in the cosmos for eternity, but suddenly a third party was born into the cosmos and that was Zoey. Both Voan and Mono seek to take Zoey for themselves, because she's unique, and possesses something they do not. Voan wants to train Zoey to harness her power and put it to good use, while Mono wishes to use her power for evil.