Nina O'Brien is a supporting character from the anime series Macross Delta. She serves as one of the three bridge operators aboard the SDF/C-108 Macross Elysion, the main vessel of the private military contractor Chaos. Her role is primarily that of a support crew member, handling communications and data management during missions. She is distinguished by her strong fondness for Mercats, a species of sea-faring feline creatures native to the planet Ragna, where Chaos is based. This affection is one of her most notable personal traits and often surfaces in her interactions. Beyond her fondness for Mercats and her duties on the bridge, little else is established about her background, specific motivations, or personal development over the course of the series. She does not have a prominent narrative arc or close relationships that are explored in depth. Her role remains consistently that of a capable and reliable operator within the larger crew of the Macross Elysion, contributing to the logistical and operational side of the story without taking center stage. No further detailed information about her personality, abilities, or growth is available from reliable sources.