[Gothmog]

I guess this is a question of who among Valar will be most reluctant to send the host to the aid of Elves and Men?

It's not Tulkas for sure. He'll be longing for a wrestle with that old Melkor-guy. Ulmo should also be one of those most inclined to send help to M-E, he was one of few who never abandoned it fully. Orome has always been a great hunter of dark creatures so I think he, too, would like a battle vs Melkor. Varda and the Elves has this special bond. She would definitely want to help them.

But Mandos on the other hand, he's always been kind of dull and unhelpful. I wouldn't be surprised if he refused to help the Children of Iluvatar now. After all, he wouldn't like to see the work of his Doom come to nothing. He's one possible candidate.

And what about Aule? His beloved Dwarfes has recently been slain by the Elves and it wouldn't surprise me if he held a grudge towards them now. Why help someone who cut down your children because of some stone? But on the other hand, he if someone should appreciate a nice jewel...

I think I'll be going for either Mandos or Aule, if there's not a better option presented.