Cure Elim Los Malvar

Elder Coffin Dragon Lord  (エルダーコフィン・ドラゴンロード) is a Dragon Lord, the most powerful dragon in the New World.

Background
It is known that Elder Coffin Dragon Lord is currently dead. Shown by its epithet, Elder Coffin Dragon Lord was an Undead Dragon, as is the Vampiric Dragon Lord.

The Lizard Man Heroes Arc
Zesshi Zetsumei guessed that Shalltear is either the Elder Coffin Dragon Lord or Vampiric Dragon Lord, as she was too strong to be classified as a normal vampire in this world.

Trivia

 * There is a slim possibility that Elder Coffin Dragon Lord is still active, as it is undead.