|Siblings||Iris, Aello, Celaeno, and Ocypete|
In ancient Greek mythology, Arke or Arce (Greek: Ἄρκη Arkē) was a daughter of Thaumas and sister to Iris. She is sometimes affiliated with the faded second rainbow sometimes seen in the shadow of the first.
When the Olympians won, Zeus punished Arke. She was deprived of her wings and cast into Tartarus, together with the vanquished Titans. Arke's wings were later given to Peleus and Thetis as a gift on their wedding day; Thetis later gave them to her son Achilles, which is thought to be the derivation of his surname Podarces (literally "swift-footed", as if from πούς, gen. ποδός "foot" + the name of Arke).