Concernant Irmo

[Maglor]

"And wise was Olorin, counsellor of Irmo : secret enemy of the secret evils of Melkor, for his bright visions drove away the imaginations of darkness."
HoME X Myths transformed-The later Quenta Silmarillion-Of the Valar

"To the defeat of Sauron would he (Manwë) not then send some lesser (but mighty) spirit of the angelic people, one coëval and equal, doubtless, with Sauron in their beginnings, but not more? Olórin was his name. But of Olórin we shall never know more than he revealed in Gandalf."
UT-Part 4-the Istari

Conseiller d'Irmo peut-être, mais envoyé par Manwë ! ;-)