Salomé was originally brought to Japan by Commander Hedder, who saw her as a powerful ally to have for facing down Battle Fever in combat. In her first battle, she easily stands down against the team and even protects Hedder from the heroes' Penta-Force, being enough to prove to Satan Egos of her value to the team.

Although mostly notable for her physical strength in the early missions, Salomé eventually became the main field commander of Egos as their mission against Battle Fever goes on, leading the Cutmen and Egos Monsters in combat. She also ends up leading to the departure of both of Battle Fever's major departures. When she worked alongside the Dracula Monster in kidnapping the sister of Diane Martin, Salomé lead to the first Miss America to become weakened to the point of sacrificing her powers to replacement Maria Nagisa. Further, she lead an army of Cutmen to attack Kensaku Shiraishi, the first Battle Cossack, in broad daylight, leading to his murder and his replacement by Makoto Jin.