Ambassador Alvijar is a Dwarven ambassador from Keldagrim that is currently visiting the cave goblin capital, Dorgesh-Kaan. He and Ur-tag have helped to develop the massive Dorgesh-Kaan - Keldagrim Train System which runs between the two underground cities.
To find him, go through the Dorgesh-Kaan caves and enter the door to Dorgesh-Kaan. Go up the stairs to the north and he is in a house south-east of the stairs, south of the building with the quest icon.
He appears quite interested in the cave goblin way of life, although he has expressed some frustration over the goblins' refusal to adjust to more efficient methods of living and working. He feels that the dwarves' relations with the Dorgeshuun may lead to different, more peaceful relations with the goblins on the surface, although the Dwarven Consortium may not share the same views.
Ambassador Alvijar is involved in Another Slice of H.A.M..
Alvijar is the solution to the elite anagram clue: MAJORS LAVA BADS AIR. The answer to the challenge is 2505. You must have completed Another Slice of H.A.M. to prompt the dialogue.