Artificer Mullenix can be found in the center of Eye of the North.
Before speaking to Gwen:
- You must be the adventurers from the south Gwen told me about. She's waiting for you in the Hall of Monuments at the rear of the Eye
After speaking to Gwen:
- I have kept a detailed record of every aspect of our mission in Charr lands. I have reports of vital Vanguard movements and military operations, and log listings of all supplies and personnel. I find my work quite exciting. Ask your questions. I can answer them all.