Demon Lord

Demon Lord is a monster found in the seventh Hero and Monster Collection set, Treaty of Champions. It was originally found in Second Edition Conversion Kit.

Description
Power pulses through every thick muscle of these monsters, and a raw potency fills the air around them. They thrive on terror and domination, lashing out at enemies with magical force and imbuing fiery blasts with their own dark might. A demon lord’s brutal blows can defeat even the mightiest champions and wreak the havoc that these evil creatures crave.

Demons are among the most terrible and powerful creatures. Demons wield titanic magics and are wreathed in a searing sheet of flames. The mightiest demons overcome their enemies with terror and dread.

Trivia

 * Demon Lords first appeared in the base game from Descent: Journeys in the Dark (first edition), where they were referred to simply as "Demons."