Miss Miura acts as secretary to Heihachi Mishima within the Mishima Zaibatsu. Her full name, Akiko Miura, appears on her handheld screen, though characters solely refer to her as "Miss Miura" or "Miura-san." She exhibits a sensible, business-oriented demeanor, managing corporate affairs and sensitive matters concerning the Mishima family. Her duties include overseeing research into the supernatural entity Ogre and liaising with associates like Dr. Bosconovitch. While discreet about the Mishima clan's history, she directly voices opinions to Heihachi, such as advising against flashy flame designs on Jin Kazama's training gi; Heihachi overrules her but acknowledges her viewpoint.

She monitors Jin Kazama's intense training regimen with Ganryu, tracking his progress and resilience. She provides Heihachi intelligence on fighters who vanished after encountering Ogre, presenting files on combatants including Baek Doo San, Wang Jinrei, the original King, and Lee Chaolan. Before the King of Iron Fist Tournament 3, she cautiously advises Jin against public association with Heihachi, warning it could unintentionally reveal his lineage to Kazuya Mishima – a past assassination target. Later, she questions Heihachi's confidence in Jin defeating Ogre; Heihachi dismisses this, emphasizing Jin's role as bait rather than a guaranteed victor. Her role significantly diminishes following these events within the tournament narrative. She remains exclusive to this animated adaptation, not originating from or appearing in the core *Tekken* video game series.