Cyrus had kidnapped Eevee to blackmail Mitsumi to join Team Galactic. Cyrus succeeded the plan and Mitsumi joined Team Galactic. Even after Mitsumi joined Team Galactic, Cyrus kept blackmailing her to do what he wants. After the Team Galactic headquarters blew up, Jun has retrieved Eevee before the blown up and gave Eevee back to Mitsumi.
None of Eevee's moves are known.