Drakonis

Drakonis is a major antagonist in Legend of Mana and recurring characters in the Mana series.

Background
Drakonis, the Crimson Dragon, is also called the Archemon of Hell, and is personally assisted by his Dragoon Larc. He is one of the four great dragons of Fa'Diel, along with Akravator, Jajara, and Vadise. It is said he is able to control fire. Long ago, he was known as the Emperor of Dragons and ruled in absolute tyranny. He was robbed of his magical powers and sent into the depths of the Underworld by the combined forces of the three other Dragons as punishment for his lust for power and control. He now wanders the Underworld in a weakened form, swearing revenge on his draconic siblings.

Legend of Mana
The Crimson Dragon is first seen in the Pulpit of Eternal Flame at the deepest level of the Underworld during The Fallen Emperor quest. He has summon the protagonist and tested his strength to see if he/she is worthy of defeating the other three dragons. He explains to the main character that he wants him to help Larc retrieve his stolen powers the Dragons of the overworld has kept within Mana stones and slay them in the process. He swears to return the protagonist to his previous form if he/she should preform his request. He is then seen again in The Crimson Dragon quest where he returns to his original form after absorbing all the mana power from the Mana stones, betraying the promise he made with Larc of fighting him to determine a victor. He absorbs Sierra's brother after transforming it into a mindless monster, and rises his castle from the Underworld. He is ultimately defeated by the protagonist and Sierra.