Courtesy of the Sonic wiki: https://sonic.fandom.com/wiki/Rusty_Rose

Rusty Rose[1] (ラスティ・ローズ[3] Rasuti Rōzu?) is a character that appears in the Sonic Prime television series. She is a pink cyborg hedgehog, and an alternate version of Amy Rose who served the Chaos Council of New Yoke City.[1]

Rusty Rose later switched sides after meeting another of her alternate selves and being abandoned by the Chaos Council.