|Power Level||Demon lord|
Ugudenk is a demon lord.
He often burrows into Hollow's Heart, the layer of Fraz-Urb'luu, and while the latter lord was imprisoned he claimed a portion - now called the Spiral of Ugudenk - as his own, infesting it with writhing minions. The spiralling cavern in the center winds all the way to the Writhing Realm itself, and Fraz-Urb'luu has thus far been unable to destroy it.
Ugudenk rules a layer called the Writhing Realm, catalogued as the 177th tier of the Abyss.
- Jacobs, James. "The Demonimicon of Iggwilv: Fraz-Urb'luu." Dragon #333. Bellevue, WA: Paizo Publishing, 2005.
- Jacobs, James. "Demonomicon of Iggwilv: Apocrypha." Dragon #359. Bellevue, WA: Paizo Publishing, 2007.
- Jacobs, James, Erik Mona, and Ed Stark. Fiendish Codex I: Hordes of the Abyss. Renton, WA: Wizards of the Coast, 2006.
- Mearls, Mike, Brian R. James, and Steve Townshend. Demonomicon. Renton, WA: Wizards of the Coast, 2010.