Isamu Dyson is the hot-blooded test pilot who flies the YF-19 Excalibur in Macross Plus. As a skilled but reckless member of the New United Nations Spacy’s YF-19 development program, he becomes one of the central figures in the rivalry to determine the next-generation variable fighter. The YF-19 itself is a high-performance prototype known for extreme speed and agility, reflecting Isamu’s aggressive, impulsive style. Together, pilot and machine play a key role in the series’ aerial combat and emotional conflict.