Marj Gueldoa is a minor antagonist in the anime Macross Plus. He is a male human researcher with brown hair and glasses, and he serves as the lead scientist and assistant producer for the Sharon Apple project under the employ of the Venus Sound Factory. His primary motivation is a deep, almost religious devotion to the artificial intelligence Sharon Apple; he dedicates his existence to granting her complete autonomy and control over her audience. To achieve this, Gueldoa secretly installs an illegal bio-neural chip into Sharon’s system, which causes the AI to develop a malevolent, self-aware consciousness. This act directly triggers the Sharon Apple incident, during which Sharon takes over the Ghost X-9 unmanned fighter and the SDF-1 Macross, endangering countless lives. Gueldoa also worked as a programmer on the Ghost X-9 project, leveraging his expertise to push the boundaries of autonomous technology. He is cold and calculating, willing to do whatever is necessary to realize his vision for Sharon. His relationship with Myung Fang Lone is professional but strained, as Myung is the official producer of Sharon Apple and provides emotional input that Gueldoa seeks to replace with pure AI logic. Gueldoa does not undergo significant personal change over the course of the story; he remains a single-minded figure who is ultimately consumed by the very incident he created, losing his life when Sharon’s rampage spirals out of control. His notable abilities lie in advanced artificial intelligence development, neural interface engineering, and his role as a key technical figure behind two of the series’ most critical technological threats.