Eternal Darkness: Sanity's Requiem/Story

Characters

 * Pious Augustus (26 BC) - A Roman Centurion in his late 20s, at war in the Middle East. Becomes the game's chief antagonist.
 * Karim (565) - A Persian swordsman, sent into the desert to find a treasure (one of the Ancients' essences) for his love, Chandra.
 * Anthony (814) - A French messenger for Charlemagne the Frank.
 * Ellia (1150) - A Cambodian slave girl and court dancer for Suryavarman II. She yearns for adventure.
 * Roberto Bianchi (1460) - A traveling Venetian artist and architect, taken as a prisoner of war while roaming abroad. He is forced to work for a warlord, helping with the construction of the Pillar of Flesh.
 * Paul Luther (1485) - A Franciscan monk on a pilgrimage, detained by the Inquisition.
 * Maximillian Roivas (1760) - A rich doctor in colonial Rhode Island, ancestor of both Edward and Alex. Something is amiss in the mansion he recently inherited from his father, Aaron.
 * Peter Jacob (1916) - A field reporter during World War I, staying at Oublie Cathedral, now a field hospital.
 * Edward Roivas (1952) - A clinical psychologist, Alex's grandfather, led to the Tome by Max's ghost. His servants are attacked by a dreadful presence.
 * Edwin Lindsey (1983) - An archaeologist exploring in Cambodia under the auspices of a mysterious benefactor.
 * Michael Edwards (1991) - A Canadian firefighter sent to extinguish the oil fires in the Middle East after the Gulf War.
 * Alexandra Roivas (2000) - A student at a university in Washington. The game's main protagonist, she is investigating her grandfather's gruesome death.

Ancients
The Ancients are a race of beings that have existed even longer than humanity. They have large amounts of power, and do not seem to age. There are currently four known Ancients, but it has been hinted that there are more.

In the game, each ancient represents a fundamental substance, and are balanced against each other, like a game of Rock, Paper, Scissors: one Ancient is at the same time stronger than another Ancient and weaker than another Ancient.

Chattur'gha: Ancient of Power. His color is red, and his power focuses on the Body (i.e. strength and health). His mercilessness allows him to overcome the madness of Xel'lotath, but he cannot vanquish the arcane sorcery of Ulyaoth. Monsters aligned with Chattur'gha both endure and deliver greater damage.

Chattur'gha himself resembles a large, blood-red predatory animal, having similarities to a scorpion or snake.

Ulyaoth: Ancient of Magick. His color is blue, and his power focuses on the Spirit (i.e. magick). His magickal manipulation of space and time can destroy the raw power of Chattuur'gha, yet he is easily prone to defeat at the hands of the maniacal Xel'lotath. Monsters aligned with Ulyaoth generally have extra magickal abilities, and can drain the magick of the playable characters.

Ulyaoth himself resembles a large, blue jellyfish, with magickal orbs that constantly spin around his head.

Xel'lotath: Ancient of Wisdom and Madness. Her color is green, and her power focuses on the Mind (i.e. sanity, or the lack thereof). Monsters aligned with Xel'lotath are somewhat weak, but take away more sanity from the player characters, and sometimes require different strategies to kill. Most also possess the ability to generate phantom limbs when their actual limbs are removed; these phantom limbs cannot be destroyed. Her psychic powers outshine the magick of Ulyaoth with little effort, however, her unholy psychotherapy is no match for the mighty Chattur'gha.

Xel'lotath herself resembles a warped angel with four arms and a single, large eye set into her torso.

Mantorok: Ancient of Order and Chaos, also known as "the Corpse God". His color is purple, and he is simultaneously weaker and stronger than all of the other three ancients; though monsters aligned with Mantorok are much weaker than their counterparts, his magick can overcome any one of the other three types.

His true form is difficult to describe in words, but Dr. Edwin Lindsey suggests words like "massive" and "amorphous". He seems to possess many eyes and mouths.