|Voiced by|| Chie Matsuura (Japanese)|
Kate Oxley (Funimation)
|Age||13-14 (Estimation, around Natsumi's age.)|
|Species / Type||Pekoponian|
Satsuki Shiwasu (師走 さつき Shiwasu Satsuki) is a character in the series Keroro Gunso. She is one of Natsumi Hinata's friends. She seems to have a mad crush on Natsumi. This is apparent in many ways, such as the overwhelming appraisal, and telling her that she can "find a better boyfriend, or girlfriend" than Saburo.
Her name comes from the traditional Japanese names of the month of May (Satsuki/皐月) and December (Shiwasu/師走).