Numinor is from the planet Zotra and is the elder brother of Yumi.
He and Yumi were captured and held prisoner by the disciples of the Cyclops
in the pilot episode, Vengeance of the Gods.
They met Telemachus when he was held in the same cell and were rescued by
Ulysses. Unlike his sister, who escaped the curse of the gods, Numinor
spends most of the journey through Olympus asleep along with the rest of
Ulysses's companions.
In Mutiny on Board, Numinor and the other sleeping companions are revived
by the gods who use them to take over the Odyssey and steer it towards the Reefs
of Space. Yumi uses her powers to briefly lift the curse so that Numinor can
help in the fight to restore order. Numinor is also revived in The Lost
Planet, in which the Odyssey visits the Seventh Satellite of Zotra, and in
The Magician in Black, where he, Ulysses and Telemachus are forced to
play a dangerous game in an attempt to win the freedom of their companions.