Mikage Sagiri

Biography
Mina is Rex Goodwin's secretary who was sent to watch over Jack Atlas while he was the King of Duelists. She is often very concerned over Jack and tries her best to be useful, despite Jack's cold attitude towards her. She is the only one who knows that Jack's feelings for Carly are his true motivation for fighting the Dark Signers. She has shown to have feelings for Jack (though he doesn't seem to reciprocate) and envies Carly for the attention he gives her. Following the Dark Signers incident, she becomes a chief in the Special Security Investigation with Trudge as her assistant.