Note, also known as the Saiyan Heroine, is an Earthling from Satan City who employs advanced time travel technology within Dragon Ball Heroes arcade machines. This technology allows her to assume a Saiyan avatar form in the game universe, where she battles alongside historical Dragon Ball characters. Her appearance resembles Pan's, featuring a ponytail hairstyle.
Her initial Saiyan Hero outfit includes a red cropped dobok over a yellow long-sleeved crop top, red pants, a teal belt tied in a waist bow, teal wristbands, yellow leggings, and black boots with white accents. This attire progresses through "Class-up" transformations: the first adds a teal waist cloak and converts pants to shorts; the Super Class-up introduces a red overcoat with yellow accents and a short skirt; the God Class-up modifies the coat and adds black gloves; later forms like Super God Class-up and Ultimate Class-up Sign incorporate long red vests, black dresses, and fingerless gloves. In her natural Earthling form, she wears a yellow Dragon Ball Heroes team jacket, olive green shorts, black thigh-high socks, and blue-and-white high-top sneakers.
As an experienced Super Dragon Ball Heroes player, Note exhibits confidence and competitiveness. She respects Great Saiyaman 3 (whom she addresses as "Master") but admonishes his tardiness. She uses logical persuasion, such as convincing her mentor to let her battle recruit Beat to foster team cohesion. Though starstruck encountering game versions of figures like Goku, she stays mission-focused against anomalies. Her overconfidence occasionally surfaces, like prematurely declaring victory against Dabura. Emotionally, she values positive timeline anomalies, tearfully reacting to Minotia's survival against established history. After losing twice to Beat, she maintains a rivalry, demanding he lose only to her. The "Victory Mission" manga implies romantic feelings toward Beat.
Combat abilities include flight, Kamehameha, Spirit Bomb (in tandem with Goku), Spirit Sword creation, and rapid "Dragon Dash" movement. She achieves transformations—Super Saiyan through Ultra Instinct Sign—via specific Class-up tiers. She also executes combination techniques with Beat, such as the "Friend Kamehameha."
Across "Dragon Ball Heroes," "Victory Mission," and "Super Dragon Ball Heroes: World Mission" storylines, Note partners with Beat to investigate and correct temporal anomalies threatening to merge the game world with reality. Key missions include battling Raditz, Nappa, and an anomalously empowered Super Saiyan 3 Vegeta during the Saiyan invasion; confronting Frieza's soldiers while Goku fights Frieza on Namek; assisting against Turles and the Tree of Might; fighting alongside Bardock on Planet Vegeta; combating Shadow Dragons like Oceanus Shenron; and clashing with Legendary Super Saiyan Broly. Using a Hero Switch device, she enters the game as her Saiyan avatar, later manifesting this form in the real world to counter threats like the Organization of Babidi.