Queen Pasiphae of Crete was the mother of the Minotaur, thus any son or daughter of hers would be the half-sibling of the Minotaur, including:
Catreus (King of Crete after Minos)
Androgeus (Killed by the Athenians and restored to life by Asclepius)
Deucalion (succeeded his older brother Catreus as King of Crete, father of Idomeneus: Odysseus pretends to be his second son Aethon when he speaks to his wife while in disguise.)
Glaucus (Polyidus found the boy dead, brought him back to life: Minos forced him to teach Glaucus the art of divination – he did – then was made to forget, later led an army that attacked Italy, introducing to them the military girdle and shield.)
Acacallis (loved by Apollo/Hermes).
Xenodice
Ariadne (loved by Theseus, married Dionysus).
Phaedra (loved by Theseus) .
Euryale (loved by Poseidon).
Catreus (King of Crete after Minos)
Androgeus (Killed by the Athenians and restored to life by Asclepius)
Deucalion (succeeded his older brother Catreus as King of Crete, father of Idomeneus: Odysseus pretends to be his second son Aethon when he speaks to his wife while in disguise.)
Glaucus (Polyidus found the boy dead, brought him back to life: Minos forced him to teach Glaucus the art of divination – he did – then was made to forget, later led an army that attacked Italy, introducing to them the military girdle and shield.)
Acacallis (loved by Apollo/Hermes).
Xenodice
Ariadne (loved by Theseus, married Dionysus).
Phaedra (loved by Theseus) .
Euryale (loved by Poseidon).