Umrek is a fire giant the party encountered after having assisted Eyrikh Fjarn with retrieving and analysing the blood of the fire snakes.
Umrek introduced himself as a "Seer", a titel held by a leading scholar in the Giant culture.
He has informed the party that he believes fire giants kingdom have been corrupted, namely their king, Titan Kaelor, who seek to wage war against Pen Dara and other civilized places in the Highlands.
He suspect Kaelor has been corrupted from crystals inside a chest that was found deep in the uncharted places of the Underdark. The chest came back, and Umrek documented its contents which he shared with the party via Unknown.
Umrek believes a war in the region served nothing good for anyone, and seek a way to resolve this peacefully.
He believes Pen'Dara would strike first if given the chance, and has there therefore asked the party to discreetly help him uncover the source of this corruption with the goal of curing the giant king.
In addition to the notes he shared, he also gave the important clue that the secret may lie at at the chest's origin, which he suspect is what is known as Whispermist Isles in the common tongue, but a place that the giant's once knew as "Solmara".