Ultimate Org Senki (究極オルグセンキ, Kyūkyoku Orugu Senki, Thousand Demon) : The King of all Orgs, the source of the Orgs' power after the Org Master was destroyed. Ultimate Org Senki was the final villain ofHyakujuu Sentai Gaoranger and was formed from the remains of the Org generals Highness Duke Orgs Shuten, Ura, andRasetsu.
In the finale Senki was created when the Org Heart merges the remnants of the three Highness Dukes thus fulfilling an ancient prophecy of the "Last Org Advent".