Moa, a female Myumon alien sheep from another galaxy, celebrates her birthday on August 7th and stands 161 cm tall. Her appearance features pale blue eyes and fluffy pink wool decorated with gold star accessories. A distinctive antenna-like cowlick protrudes from her head, complemented by black sheep ears with gold-circled horns and a small black tail. She typically wears a pink balloon-style dress with dark gray ruffles and gold star motifs on the hips, a red bow with gold bell at the neck, black sleeves, black tights, and light pink knee-length boots.

Arriving on Earth for research, she later joined the band Plasmagica as drummer and vocalist, performing on her "Super Cosmos" drum kit. Her personality radiates energetic sweetness and unfiltered curiosity, often declaring strong preferences with phrases like "really really likes" or "doesn’t like." She punctuates speech with the tic "pyuru" to communicate with her home planet, though her bluntness sometimes sparks band conflicts. Recognized as Plasmagica's most skilled musician, she channels cosmic influences in her artistry.

Her antenna-cowlick links to a MidiCity satellite, enabling spaceship summoning and communication with her mother in deep space. Rapid wool growth leads to a side job at a mattress store, where her fleece becomes stuffing material. While filing mission reports on MidiCity, she habitually inserts personal observations. Her interests encompass rare animals, cooking, and admiration for the band Tsurezure—whose melodies evoke her homeland.

Across media, she engages in Plasmagica's activities and concerts. In "Show By Rock!! Stars!!," she interacts with bands like Mashumairesh!! during collaborative events as an established band member.