Hypnos (Saint Seiya)

Hypnos was the mortal god of the death. He was the twin brother of Thanatos and the second main servant of Hades. When he dies in anime, his star in his head disappears.

Personality
Hypnos, although allied with Hades, is a good bad guy; he want the victory of Hades and destroy the world, but with less empathy to his enemies, and don't wish kill them; according him, the sleep is a non-deadly death, and uses schemes to don't kill the enemy, so, he don't attacks his enemies impulsively in front, because he want not kill them; he is a strategisty guy too. But in Lost Canvas, he don't had empathy, and only was a strategisty.

Lost Canvas
With priest clothes, Hypnos guides Alone to possession by Hades.

According Lost Canvas, Thanatos with Hypnos in the Holy War of XVI Century, did Athena dies after Hades defeat. So, Sage and Hakurei gets worried with them menace.

In the Century XVIII holy war, because of his genius, Hypnos was most hardly defeated in this ark, and Hakurei tries arrest Hypnos in a box (where Thanatos was imprisioned), but die in the process.

In Lost Canvas, he was a great friend of Pandora.

Saint Seiya
In the Saint Seiya classic series, Thanatos and Hypnos was freed by Pandora and he and Hypnos promises to Pandora, eternal life if she cares of the Hades soul and Hades host, being his elder sister. Pandora was brainwashed and only saw the wolrd around she in gray and black colors, thought Hades will purifies this world

But, when Pandora betrays Hades, Thanatos, with his wickedness, kill Pandora, disregarding all what she did to Hades. Hypnos rebukes his brothers, and tell to Thanatos that him kidnaped Athena, but didn't kill her, arresting her in a vase; he want not shed blood in the Elysium

Seiya arrives in the Elysium, and meet Thanatos, that tries kill Seiya, and Hypnos leaves Thanatos fighting with him, and wait in his tempel; but, when remembered of the divin clothes and they menace, he goes notices it to Thanatos, but Seiya gets the divin cloth and kill Thanatos. Seiya passes throug Hypnos and he want notices to Seiya, don't awake Hades body, but Ikki stops him. Shun gets the divin cloth and Ikki goes to help Seiya, but Hypnos does Shun sleep for eternity (his divin cloth saves him after), and Shiryu and Hyoga, with their own divin cloths, defeats Hypnos, worried with Hades body.