|Home world:||Earth (U40 Timeline)|
|First appearance:||The☆Ultraman Episode 1|
|Last appearance:||The☆Ultraman Episode 50|
|Number of appearances||50 (The☆Ultraman)|
|Affiliation||Scientific Defense Guard|
|Portrayed by||Sumi Shimamoto|
Mutsumi Hoshikawa (星川 ムツミ Hoshikawa Mutsumi) starts at 18 years of age at the time of the series. Mutsumi transferred from the medical team to the Science Guard, becoming its only female member. As a woman, she hated receiving special treatment because of her gender, and strives to not be outdone by her male peers. However, she does allow professor Nishiki to call her "Miss".
Skills and Abilities
- She is the only human female character in the Ultra Series shown naked onscreen; in episode 39 where she was in the shower.