Dragons and Balrogs

[Voralphion]

Oh, and slightly OT, the Valar never participated in the War of Wrath, IMO. Their leader was a maia, and it is constantly referred to as the "Forces of the Valar", and never "the Valar". It was comprised of Elves+Maiar, without any Valar

Actually, Tulkas, Aule participated in the war of the wrath. It was Tulkas who wrestled with Morgoth, and Aule who bound him with the chain. Also there is probably a good chance that Orome also participated in it, as I don't think the huntsman of the Valar would want to be left out of such a battle against the forces of Morgoth.