Two most outstanding of the male Valar were Manvë and Tulkas. Manvë is the mightiest of all the Ainur and Ilúvatar’s dearest. He was chosen to administer Arda and is therefore called its King. This nickname would allude to Jesus Christ, who is the King of the Earth and Heaven. But having examined Manvë’s character more closely, we find out that he by no means represents Jesus. However, he has much in common with Saint Michael the archangel. In Roman Catholicism he is believed to be the mightiest of all angels what is analogous to Manvë’s position among the Ainur. He is the greatest enemy of Melkor, who in The Silmarillion represents the Devil. Likewise, Michael’s primary task is to fight the Devil and because of this he is called “the God’s warrior” and in Latin “Princeps militiae coelestis quem honorificant angelorum cives” – the leader of Heaven’s army whom all the angels venerate (http://www.zivotopisysvatych.sk/michal-archanjel/). Correspondingly, Manvë led the Ainur to a battle with Melkor.
Nevertheless, Manvë is not the only Ainu who bears some characteristics of Saint Michael. As apostle John accounts, before the process of creation started “Michael and his angels fought against […] the Devil, [ ] Satan, which deceiveth the whole world” (Revelation 12, 7-9) and defeated him and cast him out from Heaven. But according to The Silmarillion it was not Manvë who fought and defeated Melkor, but Tulkas (Tolkien, 1992, p. 48-49). Tulkas was the one whom Melkor feared the most like Satan fears Michael. And no less important evidence that supports the idea of Tulkas’s and Michael’s resemblance is that Tulkas is also called the Fighter or the Warrior. So the understanding of the greatest male Ainu as a personification of Saint Michael is shared with another character
Resource:
TOLKIEN, J.R.R., The Silmarillion, 1992, London: HarperCollins, 1992. 480 pp. ISBN 978-0-261-10273-6