Thurgo is also the discoverer of the skeletal wyverns. At one time, when mining blurite in the dungeon, he stumbled upon a hole leading into another cave. He went in and awoke the wyverns. Thinking them to be dragons, he pulled out an anti-dragon shield but was nastily burnt by frostbite and narrowly escaped the cave.
When first met, he is quite rude. However, when he is offered a redberry pie, he becomes friendlier towards the player.
Ironically, when first talking to Thurgo in The Knight's Sword quest, when you ask him if he's an Imcando dwarf, he angrily says "Maybe", however he openly tells anyone what he is when asked about the Smithing Cape.