*Mina Simington, known as Mikage Sagiri in the Japanese version, is the meek secretary to Rex Goodwin who watches over Jack Atlas. Despite her dedication and loyalty, Mina tends to unintentionally spark the wrath of her superiors. Mina loves Jack and rivals Carly and Stephanie for his affections. At the same time, Trudge has a crush on Mina. Mina does not seem to get along with Lazar, as seen by them bickering while watching Jack Duel Yusei Fudo (this is made more obvious in the dub).

Mina has short, blue hair and gold eyes. She wearing a white blouse under a gray-blue jacket that ends in the front abdomen above a brown belt, but falls past her white skirt in the back. Her outfit is also accompanied by brown heels and blue dangle earrings.

During the third arc of Yu-Gi-Oh! 5D's, she has longer hair and keeps her jacket unbuttoned.

Mina was assigned by Rex Goodwin to keep tabs on his protege, Jack Atlas. After Lazar reported Jack's meeting with Yusei Fudo, Mina told Goodwin about it during a meeting with Zigzix. Though Goodwin politely excused himself from the meeting, once in the hall, Goodwin chastised Mina harshly afterwards, and nearly strangled her for letting Jack anywhere near the "Satellite scum". She, Goodwin, and Lazar watch the Duel between Yusei and Jack on the police scanner, and Mina is seen casting her superiors a nervous glance.

She is also a part-time manager for Jack's Dueling career. She also encourages Jack to play as the King for the public to keep his image.*