Chapter 642, "Overlord's Domination.", is the clearest early answer because it turns Undead Overlord's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Alec fixed his gaze on Dorian, who was now floating before him,...

Chapter 640, "Undead Overlord.", is the clearest early answer because the violence around Undead Overlord becomes final instead of hypothetical. A useful checkpoint is the way the scene starts with As the undead army retreated and Alec’s teammates moved back, a clear...
Chapter 643, "Overlord's Domination 2.", is the clearest early answer because it turns War God Academy's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Dorian didn’t want to take any chances, and that was why after...
Chapter 642, "Overlord's Domination.", is the clearest early answer because it turns Undead Overlord's situation into a concrete plot event. It opens with Alec fixed his gaze on Dorian, who was now floating before him,...
Chapter 742, "Overlord Cybernetic Golem.", is the clearest early answer because it turns Alec's situation into a concrete plot event. A useful checkpoint is the way the scene starts with [Note: Since the golem in question has undergone manual evolution...
Chapter 443, "The Undead Knights (2).", is the clearest early answer because the violence around Alec becomes final instead of hypothetical. A useful checkpoint is the way the scene starts with Knight made sure that he would appear next to Alec as soon as he...
Chapter 440, "The Undead knights (1).", is the clearest early answer because the violence around Chilling Touch becomes final instead of hypothetical. A useful checkpoint is the way the scene starts with While the skeletal knight had begun to cause significant trouble on...
Chapter 452, "The Real Undead Leader.", is the clearest early answer because the violence around Alec becomes final instead of hypothetical. A useful checkpoint is the way the scene starts with Alec was thrown back upon clashing with Dullahan, as he realized he...
Chapter 816, "Undead Purge Pill", is the clearest early answer because the violence around Tier becomes final instead of hypothetical. A useful checkpoint is the way the scene starts with In the next split second, Alec found himself in the amulet space,...
No, it wasn't. The master of Little Tyrant's Reigning of the World was Long Shuai, not Chen Yang.
There were 14 episodes of the Undead King Overlord.