Yaru

Yaru was the mysterious shadow messenger of Morgoth. Yaru was sent to deliver a message to the Valar for Morgoth. Exactly how and why this messenger did this--and what false promises Morgoth used to taint this deluded fool is unknown. However, Yaru went before the Valar and gave Morgoth's message and in turn was slain by Tulkas who could not hold back his rage. Yaru tried to fight, but Tulkas broke through his defenses with ease and killed Yaru utterly.