Hades' lair is based on Hades' palace from Greek mythology, and Hades 'alir from the Disney film, Hercules. The Five Rivers of the Underworld are also based on Greek mythology, while only the Styx appears in the Disney film.
Five Rivers of the Underworld
- The Styx - The blue river.
- The Cocytus - The grey river.
- The lava river
- The Acheron, also known as the River of Lost Souls - The green river. When people touch it, the river makes them lost and reduces them to mindless tormented husks. It is also a portal to the "Worse Place".
- The Lethe, also known as the River of Forgetfulness - The yellow river. When drunk, the water makes people forgetful and can be used in place of a forgetting potion. A spring from the Lethe ran near Royal Manor in the Enchanted Forest.
- Hades' lair is down below the library, connected by an elevator. ("Souls of the Departed" et al.)
- The floor in Hades' lair has a pentacle design: A pentagram with a circle around it. The edges of the pentagram are emblazoned with a pitchfork-like motif, a motif that can also be seen on one of the flags in Hades' lair. The floor in the ambrosia temple has the same design. ("Souls of the Departed" et al., "Firebird")
- Fittingly enough, the pentacle and the pentagram are often associated with evil and the devil. However, they are also seen as positive and spiritual images. These symbols have been used by major world religions and can be found in ancient scriptures of Christianity and even Judaism. In earlier times, Christians have widely used the pentagram as a personal charm and a protective amulet, and at one time, the pentagram was used to symbolize the five wounds of Jesus when he was hanged on the cross. The pentagram and the pentacle have also been used by occult faiths and magicians, and today, the pentagram is used as a symbol for Wicca, Witchcraft, and Paganism. It is also said that the five points of the pentagram represent the five elements, fire, earth, water, air, and spirit.
- The platform over the River of Lost Souls is also shaped like a pentacle. ("Devil's Due")
- The pentacle motif with the pitchforks can also be seen in one of the doors in one of Jefferson's Hats. ("The Final Battle Part 1")
Fairytales and Folklore
- The lava river is a reference to the Phlegethon, the river of fire in the Underworld.
- The Acheron, River of Lost Souls, shares aspects with three of the five rivers from Greek mythology: Lethe, Styx and Acheron. Lethe is the river of unmindfulness, and all those who drank from it experienced complete forgetfulness. Styx is the river that some souls would try to swim across to reach the Underworld. Acheron is the river of woe, where the shades are ferried across by Charon. In Homer's poems, the Acheron was described as a river of Hades. ("Devil's Due")
- When Cora enters his lair, Hades is listening to Niccolò Paganini's composition "Violin Concerto No. 2 In B Minor, Op. 7, Ms 48". ("Souls of the Departed")
- The book Hades is reading in his lair is Faust by Johann Wolfgang von Goethe. ("Devil's Due")
- An early twentieth century edition of Modern Eloquence Vol XV: Political Oratory, edited by the American politician Thomas Brackett Reed and published circa 1901 – 1903, is lying on a table in Hades' lair. ("Last Rites")
|Once Upon a Time: Season Five|
|"The Dark Swan":||"The Price":||"Siege Perilous":||"The Broken Kingdom":||"Dreamcatcher":||"The Bear and the Bow":||"Nimue":||"Birth":||"The Bear King":||"Broken Heart":||"Swan Song":|
|"Souls of the Departed":||"Labor of Love":||"Devil's Due":||"The Brothers Jones":||"Our Decay":||"Her Handsome Hero":||"Ruby Slippers":||"Sisters":||"Firebird":||"Last Rites":||"Only You":||"An Untold Story":|
|Once Upon a Time: Specials|
|"Magic is Coming":||"The Price of Magic":||"Journey to Neverland":||"Wicked is Coming":||"Storybrooke Has Frozen Over":|
|"Secrets of Storybrooke":||"Dark Swan Rises":||"Evil Reigns Once More":||"The Final Battle Begins":|
Note: "Archive" denotes archive footage.