Morpheus

Morpheus is the God of Dreams that appears in Human shapes in Greek Mythology. The main antagonist of Volume 11 and Volume 12, aiding Chaos Insurgency's Old Maou Faction, New Olympus Faction and Hero Faction behind the scenes in a scheme to destroy the Vampyres, Devils and Fallen Angels. He commands a legion of Dreamers, Hollows and Grim Reapers, opposing Hades and Persephone for control over the Realm of the Dead. He later returns as one of the main antagonists of the last arc, as he forms the Alliance of Nightmares with the plan of eliminating the Eden team, Longinus users, the chief-gods of each mythology, and Myrddin Beelzebub and Bonnibell Satan.

Appearance
Morpheus has the appearance of a tall, grey-skinned man dressed in attire worn by high priests, gives off a creepy aura as well as Greek chest armor underneath. He has long silver hair and pale white eyes and shrouded in dark mist.

Personality
Morpheus despises beings of other mythologies, especially Vampyres, Devils and Fallen Angels, believing that they are unnecessary beings, calling them bloodsuckers (referring to the Vampyre's bloodsucking tendancies), bats (referring to the Devil's wings) and crows (referring to the Fallen Angel's wings). It is important to note that despite his hatred of the other mythologies, he is not an Evil God. His goal is to rid the world of these beings as he calls them an annoyance. Morpheus is also disgusted that Zeus, Poseidon and Hades are cooperating with the Five Factions. He seems to refer to reincarnated beings as "fakes", seen when he calls Marcello a "fake seraph". Despite his hatred for devils, he’s capable of showing kindness to his devil underlings as seen when he comforted Rosier and Verrine after they and their team were defeated in the tournament.

Volume 10
He appears in Volume 10 as one of the spectators for Arthur and Leohart's Rating Game, greeting Azazel and the Pendragon and Lucifer groups before the start of the match.

Volume 11
In Volume 11, he unseals Samael which he lends to the Hero Faction and New Olympus Faction. After the battle, he sends his Grim Reapers and Hollows to attack the Pendragon Group, before calling them to retreat after Zakhen Mammon captures Alice and forcefully activates her Balance Breaker, creating 13 gigantic monsters to attack Hell.

Volume 12
In Volume 12, he was confronted by Percival Lucifer, Azazel and Hades in order for him not to interfere the crisis that is occurring in Hell, in exchange, he demanded that Percival reveal his "true form". It is later stated by Indra that Morpheus is very displeased about Percival, Azazel and Hades' confrontation and sends Cao Cao to the Dreamtime to calm him, along with Guan Yu, Georg Faust, Alice, Cardinal and Fionn Mac Cumhail.

Volume 23
Morpheus reappears in Volume 23, having found Lilith's power taken form from the intel given to him by the Evil Dragon Apophis and believes he and his group from Dreamtime and Netherworld are enough to stand against the invaders from other world ExExE (Evie Erotica Etoulde).

Volume 24
In Volume 24, Morpheus was informed by his underling that Balberith, Verrine and Rosier have emerged victorious against Mahabali and his Asura team, which made satisfied and considering them amazing monsters. He look at the image of Balberith and seeing him a potentially capable of challenging a Dragon God single-handedly and wondered if Lilithin still continue production, which his subordinate informed him that it's limit will be reached very soon. Morpheus asked his other subordinates about the movement of Persephone and Thanatos, which they told him that they want to maintain neutrality and his other subordinate urgently informed that the primordial gods such as Erebus, Nyx, Tartarus, and Melionë will be arriving at the meeting and Tartarus and Melionë also summoned Angra Mainyu and Chernobog to the meeting as well, leaving the Dreamers, Grim Reapers and Hollows surprised. Morpheus believes there are Gods who feel pain because of the peace that Eden team protects and the Primordial Gods like Tartarus and Melionë and Evil God Angra Mainyu is already more than enough. He took a look of a large displays, and a group of people appeared on them and glared at the portrait of Arthur Pendragon, and tells his subordinates about their goal eliminating the chief god of each mythology, the Longinus possessors, and Myrddin Beelzebub and Bonnibell Belial.

Volume 25
In Volume 25, Morpheus was in the conference room with the other gods and they were informed by the Grim Reapers and Hollows that they were currently on Tobio Ikuse, Adrian Plato and the Cross Times Kiss group led by Midoriya Kanzaki have started to move. Then a communication magic circle developed in the middle of the round table and revealed to be Arthur and as Morpheus was about to congratulate him of his success of being qualified for the main stage, Arthur furiously threatens to beat Morpheus if he tried to attack his family again, causing a bit of panic to the other gods and Angra Mainyu finding him interesting.

True Volume 5
Morpheus reappeared in True Volume 5, receiving report from his right-hand Pastel Phantom (Dreamer-Grim Reaper hybrid) about the defeat of Team Young Satan of Sleeping Dragon King because of the mental states of Balberith and the others and Balberith’s conducting research about Arthur and the Oppai Dragon show. Morpheus received an apology from Rosier and Verrine for their defeat, but he comforted them that it was okay because even if their power are Super Devils, they have limits to how they were just born and looks at the empty seat and asked his underling if they got hold of Erebus, which they revealed he’s been hiding ever since the Eden team defeated Nyx and the other devils Azus, Gressil and Sonneillon also went missing. He asked Rosier and Verrine to listen to his request and shows them a recording of a living being that has the body of a machine and tells them to go with a Dreamer and triad of Grim Reapers to investigate it and wondered how the Vampyres, Devils and Fallen Angels would react to it.

Powers & Abilities
Immense Strength: Given his status as one of the Top 10 "Strongest Beings in the World", Morpheus is immensely powerful and is superior to even Zeus, the leader of the Greek Gods and Poseidon, the God of the Sea. Azazel even told his students once to avoid a direct confrontation with Morpheus.

Trivia

 * Morpheus is the fifth God to have appeared in more than one story arc, the first being Odin, the second being Hades, the third being Indra, and fourth being Shiva.