Mikako Ishii (石井美絵子), born April 17, 1990, in Ibaraki, Japan, is the ninth actress to play Setsuna Meiou/Sailor Pluto in the Sailor Moon musicals and the tenth actress to play Mamoru Chiba/Tuxedo Mask. Her first musical was Petite Étrangère.
- She is also a fashion model.
- The second kanji in her given name (絵) is pronounced as "ka" instead of the more common "e", which is her mother's decision.
- Nogizaka 46 version Pretty Guardian Sailor Moon Musical