Nyla Bertran is a researcher who appears in the anime Mobile Suit Gundam: The Witch from Mercury - Prologue. She is a member of the Vanadis Institute and works at its Fólkvangr facility, where she serves as an operator and participates in the testing of the Gundam Lfrith mobile suit. During the activation trial conducted by test pilot Elnora Samaya, Nyla works at the operator station and supports the test from within the facility.

She is an adult woman with a large, strong build, dark eyes, and dark hair cut to shoulder length. Her manner is described as frank, easygoing, and big-sisterly. She is especially close to her fellow researcher Wendy Olent, and the two share a relaxed and playful friendship; at one point in a zero-gravity environment, Nyla playfully sends liquid from a drinking straw toward Wendy. In conversation about rising tariffs, Nyla takes a more resigned and pragmatic view compared to Wendy's more reactive attitude.

Nyla's role in the story is brief but decisive. She appears mainly during the Lfrith test and the events that follow it. When intruders invade the Fólkvangr facility during the Vanadis Incident, she sacrifices her life to protect Wendy, dying while shielding her friend. Her motivation in the episode is primarily her loyalty to Wendy and her sense of duty as part of the research team. Because the prologue is short, she does not undergo lengthy character development; her arc centers on her protective friendship and self-sacrifice. In terms of abilities, she is shown to be a capable operator and research staff member, but she is not depicted piloting a mobile suit, and her duties appear to lie outside mobile suit operation.