Circe

Introduced in episode three "Beyond the Sea," Circe is an Evo whose powers and abilities manifest like Rex's powers unless she is using them she looks perfectly human. When activated, her mouth prolapses into a tube which she can use to project visible destructive sonic pulses, which also lures and attracts other Evos in her surrounding area to her via siren-like singing. She tells Rex she has joined up with the Pack because she feels like too much of an outsider anywhere else, though Rex constantly tries to get her to switch sides to no avail. Van Kleiss allows her to join the Pack even though Rex had helped her in her initiation of defeating a Sea Monster Evo. He implies that he intends to use her blossoming relationship with Rex in order to try and lure him over to his side. In episode twenty-five "Alliance", Circe finallys sees Van Kleiss' ture colors and finally strikes out on her as she is still looking for what she wants, thus breaking ties with Van Kleiss and the Pack. She might join up with Rex's old crew Tuck, Skwydd, and Cricket in Hong Kong. It is unkown as of now whether or not Van Kleiss will try and her get her on his side again by force as he did with Rex on several occassions to not avail.