Grace O'Connor is a major supporting antagonist in Macross Frontier. She is a high-ranking and highly intelligent operative associated with the Macross Frontier’s covert political and scientific forces, working behind the scenes to manipulate events for her own agenda. Calm, calculating, and persuasive, Grace plays a central role in the series’ conspiracy and conflict surrounding the Vajra. Her VF-27β Lucifer Valkyrie is a sleek, advanced variable fighter used in key battles, reflecting her status as a powerful and dangerous strategist.