Nephthys the Vulture

Nephthys was a resident of Midesta and a close friend of the Shamar Freedom Fighters. Under the threat of the Eggman Empire, she chose to join the Egg Army to keep the people safe from Dr. Eggman, but still keeping some control over the region for the doctor. The Shamar Freedom Fighters followed on part, acting as the opposition to the Midesta Egg Army to give the people hope, but secretly trying to keep balance with the Egg Army for Nephthys.

Following the discovery of Gaia Temples and their Gaia Key guardians, Nephthys kidnapped resident guardian Ehsan and held him hostage at her base in Shamar. During one night, the Knothole Freedom Fighters Sonic the Hedgehog (in his Werehog form), Antoine D'Coolette, Chip, and Big the Cat assisted the Shamar Freedom Fighters in infiltrating Nephthys' base to rescue Ehsan. However, as part of their plan with Nephthys, the Shamar Freedom Fighters lured each member into a trap, with Nephthys and her Egg Army cornering Sonic. The two engaged in battle, during which Nephthys tried to convince Sonic to abandon any effort in trying to stop Eggman, as opposition will only encourage Eggman's wrath. Sonic ignores her demands, proclaiming that he will not rest until he defeats Eggman for everyone's sake. While the others rescued Ehsan, Sonic managed to disable the Egg Boss and regroup with the others. Following the battle, Nephthys recuperated from her brawl and contacted the Shamar Freedom Fighters over her failure in the mission, but assures them that they can still salvage the power balance in Midesta.

Nephthys and the other Egg Bosses were teamed up to battle the forces under Walter and Wendy Naugus, who had occupied Dr. Eggman's facility of Eggmanland. She team up with Maw, where they both had to face off monsters.