When the Black Cross Army launched an assault on the EAGLE bases in Japan, a force led by Jade Mask attacked the Hokkaido base, slaughtering everyone with only Peggy surviving. Along with the survivors of the other bases, Peggy was summoned to Snack Gon, the secret gateway to EAGLE Japan's main command center by Japan's EAGLE Commander Gonpachi Edogawa. There they were given special formfitting electronic battlesuits, which empower its wearer with various superhuman abilities. Edogawa told them that they are the Secret Squadron "Gorenger", the world's best chance against the forces of the Black Cross Army. Their first battle was with Gold Mask, who they destroyed with the Gorenger Storm.
As Momo Ranger, she was armed with an assortment of uniquely “feminine” weapons. Her heart-shaped earrings doubled as high impact bombs which she would hurl with a curt taunt -- "Are you ready?... Here we go!". She also carried heart-shaped “Momo Card” throwing shurikens, and a “Momo Mirror” jamming device which would confuse and confound her opponents.