Phlegnn
Plague Dragon of Sloth
Phlegnn is a plague dragon who refuses to leave the hot spring that supplies a village’s drinking water. He says he needs the steam for his illness, dismissing the villagers’ sickness as their problem. Lim’s treatment hurts him and briefly turns him golden and energetic; Galanoth says his diseased form is his natural state. Further treatment and a fight end in Phlegnn’s destruction.
Sources
AQW Wiki: Phlegnn · AQW Wiki: Galanoth's Quests · AQW Wiki: Lim's Quests · One Lazy Dragon · Look What You Did! · Explodey · Phlegnn’s final confrontation