|Other Names||Old Man of the Sea|
|Age (Circ. 2012)||Unknown|
|Born||Unknown; over 10,000 years ago|
|Status (Circ. 2012)||Unknown|
|Aura Color||Unknown edit|
|Aura Scent||Rancid blubber and dead fish|
|Relationships and Family|
|Children||The fifty Nereids (Daughters/creations)|
Nereus is a Great Elder who tried to prevent Perenelle Flamel from leaving Alcatraz. He was worshiped by the ancient Greeks as the original Old Man of the Sea. He was killed by Black Hawk in The Enchantress.
The Old Man of the Sea as seen by Perenelle Flamel on Alcatraz in The Sorceress is a stocky, surprisingly-normal looking man with a head of thick curly hair flowing to his shoulders. He also has web-fingered hands and a short beard twisted into two tight curls. Nereus wears a sleeveless jerkin of overlapping kelp leaves and strands of green seaweed and is accompanied by the stench of rotting fish. In his left hand he bears a wickedly spiked stone trident. He has no lower limbs; instead, he has eight writhing, coiling octopus legs.