Futami Mami (双海真美 - ふたみ まみ) is one of the main characters of the Idolmaster series.
Younger (and slightly more mature) twin of fellow idol Ami. She is distinguishable from her twin sister by her left-facing side ponytail and, in later series, longer hair. The playful 12-year-old Futami twins love doing impressions and teasing their friends, and would frequently use their identical looks to take turns performing as a single idol (under Ami's name).
The twins' theme color is yellow, and are voiced by Shimoda Asami, also known as the voice for Vocaloid's Kagamine twins, Len and Rin.