Rumiko Kanzaki

Rumiko Kanzaki is a character that appears in Gundam Build Fighters - Regulation E. In the first thirteen episodes of the series, she is a major character who served as Elizabeth Kennedy's former rival until the two became friends following a change of heart, and the leader of the Rising Ravens.

Personality
As a child, Rumiko is a calm individual. She usually shows her artistic talents when it comes to making Gunpla; such as her old custom Beargguy III model dubbed "Mr. Pandagguy" ("Pandagguy-san" in the Japanese version). Her artistic morals and admiration for Gundam and Gunpla were what helped her earn Alice Agafonov's respect and friendship.

As she takes up her "Raven Harlotta" persona; she becomes a cold, aloof, and corrupted individual who taunts other Gunpla fighters after they lose to their opponents in a ruthless manner. She also cares less about others or their feelings, and mostly cares about herself.

This dramatic change in her personality in the first thirteen episodes of the series came as a result of two factors that greatly corrupted her mentality: her phobia of men, and her former peers (except for Alice) now ostracizing and neglecting her after the incident that happened during a field trip to America. This is exhibited in earlier episodes of the series, where she is susceptible to suffering panic attacks since they are linked to the aforementioned incident.

However, after losing to Elizabeth. She began to realize that most of her actions would cause harm to other Gunpla fighters, especially herself; therefore reverting back to her original personality. She also discards her "Raven Harlotta" persona permanently; starting her Gunpla battle career anew with her real name while she shows her fellow teammates that she had undergone a change of heart thanks to Elizabeth.

Despite her Japanese ethnicity, she has a distinct liking for English-language music, with the song "Back to Paradise" from Mobile Suit Gundam 0083: Stardust Memory being her favorite.

Trivia

 * In terms of backstory and character development, Rumiko is based on Marida Cruz from Mobile Suit Gundam Unicorn.
 * Rumiko's character image theme is Ijiwaru no Koi, which is sung by her voice actress.
 * Additionally, it serves as the ending theme of Episode 13 of the anime.