Helen is one of the six main female characters featured in the 2003 anime film Early Reins. Within the narrative, she is identified by the evocative titles of an invincible princess and a diva. Her primary setting is a saloon located in a ghost town, where she works as a singer, establishing her as a figure of performance and mystery in the desolate landscape of the Old West.

The story introduces Helen alongside a diverse group of women: Alice, a wealthy girl from the east; Lola, a skilled cowgirl known as Two Revolvers; Janette, a pure-hearted doctor; Caroline, a ranch caretaker; and Margaret, the daughter of a famous sheriff. These characters converge when they find themselves as passengers on a train bound for Sunshine Hill. The journey is violently interrupted by an attack from the bandit Heavens Bill and his gang, who are in pursuit of a gold shipment and a specific target, an army captain named Spencer.

In response to this threat, the women unite under Lola's leadership to defend the passengers. Helen's role in this situation is defined by her unique identity as a singing diva in a ghost town. The narrative frames her as invincible, a quality that likely proves crucial during the ensuing confrontation with the bandits. While the provided information does not detail her personal background, specific motivations, personality traits, or individual character development throughout the film, it firmly establishes her as a key member of this alliance, contributing her formidable presence to the group's effort to protect Spencer and the train from their attackers.