Marika Matsushima is the protagonist of the anime series 'Marie & Gali.' She is a curious and lively girl with a distinct gothic lolita fashion style. Marika is transported to the peculiar town of Gali, where scientific concepts are personified by quirky characters. Throughout the series, she learns about various scientific principles through whimsical adventures. Her role is central, as she bridges the gap between the scientific world and everyday life, making learning fun and engaging for young viewers.