Mark Nelson was a designer at Bethesda Softworks during the development of Morrowind, Tribunal, Bloodmoon, and Oblivion, but he left the company during Fallout 3's development. He is known to be a huge Duke University basketball fan, which can be seen in his choice of username, Bluedev (Duke's mascot is the Blue Devil). He has also created a few memorable Easter Eggs including Morrowind's Tarhiel, Eltonbrand and Bloodmoon's Blue Dev's Ring of Viewing. Nelson created Jyggalag as a place holder Daedric Prince, and he did some work on Shivering Isles before leaving Bethesda. Nelson is currently employed by Big Huge Games as 'Lead Narrative Designer' on Kingdoms of Amalur: Reckoning.
 Elder Scroll Game Credits
- Oblivion - Quest Design
- Bloodmoon - Writing & Quest Design
- Tribunal - Writing & Quest Design
- Morrowind - Writing & Quest Design