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Mnemosyne, the Titaness of Memories.

Mnemokinesis is the ability to control memories.

Percy Jackson and the Olympians

The Lightning Thief

After Percy Jackson kills Alecto, Chiron manipulates the Mist to replace Alecto, disguised as Mrs. Dodds, with another teacher to all students aside from him, Grover Underwood and Percy.

The Titan's Curse

While at Westover Hall, Thalia Grace manipulates the mist to make Ms. Gottschalk and Dr. Thorn think she, Percy and Annabeth Chase are students.

The Heroes of Olympus

The Lost Hero

After moving Jason Grace from Camp Jupiter to Wilderness School, Hera has him wake up with no memory and alters the memories of Piper McLean and Leo Valdez to think they are his girlfriend and best friend respectively.

The Son of Neptune

Percy wakes up with no memory as a result of Hera’s actions as well.

Storm Runner Trilogy

Zane Obispo.jpg Not part of Riordanverse

The following article/section is from the Storm Runner/Shadow Bruja continuity under Rick Riordan Presents and not the Riordanverse canon.

The Shadow Crosser

Adrik is able to steal others' memories. During a trip to the 1980's, he erases the memories of a man Marco scares with his shapeshifting and Jordan and Bird after breaking into their yacht.

Tristan Strong Trilogy

Tristan Strong.jpg Not part of Riordanverse

The following article/section is from the Tristan Strong continuity under Rick Riordan Presents and not the Riordanverse canon.

Tristan Strong Punches a Hole in the Sky

Uncle C uses the ability to remove Tristan's memories of Eddie Garvey, save for his friend's death, after not giving him Eddie's Journal. After the haint is defeated Tristan regains the memories.

The Gifted Clans series

Riley Oh-RR.jpeg Not Part of Riordanverse

The following article/section is from the Gifted Clans continuity under Rick Riordan Presents and not the Riordanverse canon.

The Last Fallen Star

In order to find the last fallen star, Riley Oh is forced to have the memories the Gom and Horangi have of her as payment.

Abilities

  • Alter memories.
  • Create false memories.
  • Erase memories.
  • Steal memories.
  • Have an advanced memory.

Users

Abilities
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 | Illusions | Light | Locks | Love | Luck | Machines | Magic | Memories | Metals | Objects | Peace | Portals | Plants | Poison | Sleep | Sound | Temperature | Time | War | Water | Wealth | Weapons | Youth
Egyptian Magic: Animal Charming | Binding Magic | Combat Magic | Death Magic | Divine Words | Duat Travel | Duat Usage | Divination | Elemental Magic | Healing Magic | Necromancy | Path of the Gods | Statuary Magic | Storm Magic | Surveillance Magic | Sympathetic Magic
Other Abilities: Alf Seidr | Charmspeak | Curse of Achilles | Death Trance | Empathy Link | Immunity | Mist Control | Monster Sense | Prophecy | Rune Magic | Seasons Alteration | Shadow Travel | Shapeshifting | Teleportation | Vocal Mimicry | Zoolingualism
Skills: Alf Sign Language | Archery | Axemanship | Greek Training | Horsemanship | Knifemanship | Legion Training | Morse Code | Multilingualism | Musical Aptitude | Old Norse | Polearmsmanship | Swordsmanship | Weaving
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