Morpheus, the god of dreams

Demigods usually have dreams or visions that have a meaning. Morpheus is the Greek god of dreams.

Throughout the series, demigods often have dreams of importance, indicating a message from someone else, or what may happen in the future.

Percy Jackson and the Olympians

The Lightning Thief

Percy has several dreams of Kronos, trying to convince him to join the Titan army. Percy also had dreams of Thalia Grace.

The Sea of Monsters

Percy has a dream of Grover in a wedding dress in a bridal shop, trying to run away, as he is coming. These dreams are revealed to be the result of an empathy link Grover created between them to communicate with Percy for help.

The Titan's Curse

Percy dreams Luke holding Annabeth captive in California, and tricks her into holding the sky, the former burden of Atlas.

The Battle of the Labyrinth

Percy dreams Daedalus and his son Icarus trapped in his workshop by King Minos. Icarus created wings to help himself escape, but did not listen to Daedalus' warning to not to go too far up in the air and he plunges to his death.

Percy soon afterwards dreams of Daedalus with his nephew Perdix. Daedalus kills Perdix by making him fall out the window. Athena sees this and punishes Daedalus by engraving a partridge into his skin.

The Last Olympian

Percy dreams of Maria di Angelo and Hades arguing about the safety of their children Bianca and Nico. Hades says that he should bring the kids to the Underworld, but Maria disagrees. Soon after, Maria is killed by Zeus' lightning bolt, and Hades immediately sends Nico and Bianca to the River Lethe then the Lotus Hotel and Casino.

Percy has another dream of Rachel Elizabeth Dare with her parents at the beach. She senses that New York is being attacked by monsters and persuades her parents to leave immediately.

The Heroes of Olympus

The Lost Hero

Piper McLean dreams of the giants telling her to bring Jason Grace and Leo Valdez to Mount Diablo if she wants her father home safe. Lupa contacts Jason in his sleep to save the Wolf House. Hephaestus contacts Leo in his dreams but the transmission kept picking up Wheel of Fortune.

The Son of Neptune

Percy's dreams are the only thing keeping him connected to his past at Camp Half-Blood. Annabeth appears to Percy in one dream, marking her only appearance in The Son of Neptune. She warns Percy to stay where he is, because Tyson and Mrs. O'Leary are coming to find him. Percy must leave however, because of the quest.

The Mark of Athena

Percy's dreams about the Twins Giants, and the located and imprisonment of Nico di Angelo in Rome. He also has dreams with Gaea telling him that she would destroy Camp Half-Blood and Camp Jupiter once she has awoken, and that she would use him as her sacrifice along with Annabeth to reawaken her in August. Annabeth also has dreams of the Mark of Athena including about Arachne and the Statue.

The House of Hades

Leo dreams that the Romans invasion of Camp Half-Blood ends in heavy loss on both sides and the giant army telling him he can't win. Jason dreams of Rachel's meeting with the Romans.

The Blood of Olympus

Jason has nightmares about his mother.

The Trials of Apollo

The Hidden Oracle

Apollo has a dream of him flying the Sun Chariot as a bus. Rhea and Nero are with him.

The Dark Prophecy

Apollo keeps having dreams about his past with Commodus, including after the death of his father, Marcus Aurelius, and when he drowned him disguised as Narcissus.

After entering the the Bluespring Caverns, Apollo sees Leto trying to plead Zeus to bring him back to no avail. Then he sees Styx scolding him.

The Burning Maze

Apollo has dream of the Erythaean Sibyl captured in the Burning Maze as well as Caligula after Naevius Sutorius Macro killed Emperor Tiberius.

Demigods & Magicians

The Crown of Ptolemy

Annabeth is visited in a dream by Athena who warns of her of trouble on Governors Island.

Magnus Chase and the Gods of Asgard

The Sword of Summer

Magnus Chase dreams numerous times when he dies or is unconscious and talks to Loki.

The Hammer of Thor

After being decapitated, Magnus dreams of two giants talking about Mjolnir and Blitz and Hearth talking to Mimir.

The Ship of the Dead

Magnus dreams numerous times of Loki on Naglfar as well as the death of Kvasir and Mr. Fierro kicking Alex out of the house. He also dreams of Odin warning him that he will have to face a creature that just eats him.

Demigod Abilities: ADHD | Ancient Greek | Aphrodite's Blessing | Ares' Blessing | Artemis' Blessing | Clear Sight | Dreams | Dyslexia | Latin
Object Manipulation: Air | Anatomy | Atmosphere | Bones | Darkness | Dead | Earth | Electricity | Fears | Fire | Healing | Ice | Light | Love | Luck | Machines | Magic | Metals | Plants | Poison | Sleep | Sound | Temperature | Time | War | Water | Weapons | Youth
Other Abilities: Alf Seidr | Charmspeak | Curse of Achilles | Empathy Link | Immunity | Mist Control | Prophecy | Rune Magic | Seasons Alteration | Shadow Travel | Shapeshifting | Telekinesis | Teleportation | Vocal Mimicry | Zoolingualism
Skills: Archery | Greek Training | Legion Training | Weaving