Her very final role was in the PlayStation 2 game Space Sheriff Spirits as the voice and the “face” of Ankoku Ginga Jyoou (Dark Galaxy Queen), last boss and original character of this game inspired to the 80s Metal Hero series. Soga also played the voices of Cyborg 007 in the 1968 Cyborg 009 anime series and the sidekick Ball Boy in 1984 series Machineman. Machiko also ran her own shop, selling jewellery, antique clothing, and tapestry among other goods.