Artemis

Artemis, Greek Huntress goddess.
One of The Olympians. Twin of Apollo, daughter of Zeus, mother of Cord Van Graff.
Member of Fionn's Squad during The Tartarus War.
First appeared in Season 2.
Season 2
Fought in The Tartarus War.
Apollo's death inspired Artemis to join Fionn's Squad on the mission to rescue Lucifer, though her interest lay solely fixed on the death of Erebus. Fionn accomplished this during The Tartarus War and she tearfully requested Erebus' small, black heart as a trophy. Fionn obliged.
Season 3
Mentioned as having moved to Australia to set up a training facility for her scions.