Kelmarin

Kelmarin was a high elf ranger who served under Sylvanas Windrunner's command during the Third War. He was one of the three scouts sent to investigate the Scourge army, the other two being Sheldaris and Vor'athil. While the other two had waited for Sylvanas to come with the bulk of the rangers, he returned to Sylvanas to inform her about the approaching army.

Sylvanas knew him well, and knew his information was always accurate and detailed.

Quotes

 * "Aye, my lady. I heard him called so by those who served him. I do not think the rumors painting him as the slayer of his father and the instigator of the troubles in Lordaeron are exaggerations, from what I have seen."
 * "My lady, if he breaks through - I do not think we have the numbers to defeat him."