After successfully soloing the big nix ox world boss I tried the same with the ugly Hunger. Maybe I missed something but to me it seems it's not soloable. In one mechanic he sucks you to him and draws blood. You have to interrupt that or else you die. Break free does not work. So I conclude that you need a 2nd person just for the interrupt. I was able to beat him easily together with a guild mate.
Main characters: Feanor the Believer - AD Altmer mSorc - AR 50 - Flawless Conqueror (PC EU)Idril Arnanor - AD Altmer mSorc - CP 217 - Stormproof (PC NA)Other characters:
Necrophilius Killgood - DC Imperial NecromancerFearscales - AD Argonian Templar - Stormproof (healer)Draco Imperialis - AD Imperial DK (tank)Cabed Naearamarth - AD Dunmer mDKValirion Willowthorne - AD Bosmer stamBladeTuruna - AD Altmer magBladeKheled Zaram - AD Redguard stamDKKibil Nala - AD Redguard stamSorc - StormproofYavanna Kémentárí - AD Breton magWardenAzog gro-Ghâsh - EP Orc stamWardenVidar Drakenblød - DC Nord mDKMarquis de Peyrac - DC Breton mSorc - StormproofRawlith Khaj'ra - AD Khajiit stamWardenTu'waccah - AD Redguard Stamplar
All chars 50 @ CP 1900+. Playing and enjoying PvP with RdK mostly on PC EU.