Non Est Asylum

Synopsis
In the series premiere, occult detective John Constantine battles a demonic entity when it threatens the life of his friend's daughter.

Main/Featured Characters

 * John Constantine's Team (first appearance)
 * John Constantine (first appearance)
 * Chas Chandler (first appearance)
 * Zed Martin (first appearance) (face unseen)
 * Ravenscar Psychiatric Facility (first appearance)
 * Dr. Roger Huntoon (first appearance)
 * Liv Aberdine (first appearance)
 * Ritchie Simpson (first appearance)

Villains

 * Furcifer (Emma) (first appearance)
 * Inner Circle (first appearance)
 * Emma/Talia/Manuel (Furcifer) (first appearance)
 * Manny (first appearance)
 * Nergal (first appearance) (flashback)
 * Satan (first appearance) (mentioned)

Other Characters

 * Astra Logue (first appearance) (flashback)
 * The Creator (God) (first appearance) (mentioned)
 * Endeavor Car Rental (first appearance)
 * Max (first appearance)
 * Cara Price (first appearance) (name seen)
 * Furcifer (Talia) (first appearance)
 * Horus (first appearance) (mentioned)
 * Newcastle Crew (first appearance) (flashback)
 * Jasper Winters (first appearance) (vision)
 * Liv Aberdine's Mother (first appearance)
 * Nana (first appearance) (vision)
 * David (Bible) (first appearance) (mentioned)
 * Solomon (first appearance) (mentioned)
 * John Constantine's Father (first appearance) (mentioned)
 * John Constantine's Mother (first appearance) (mentioned)
 * Furcifer (Manuel) (first appearance)
 * Liv Aberdine's Cousin (first appearance) (mentioned)

Teams and Organizations

 * Ravenscar Psychiatric Facility (first appearance)
 * Endeavor Car Rental (first appearance)
 * Atlanta Police Department (first appearance)
 * City of Atlanta Medical Examiner (first appearance)
 * Yellow Crown Cab Co. (first appearance)
 * John Constantine's Team (first appearance)
 * Ivy University (first appearance)
 * Inner Circle (first appearance)
 * The Pistols (first appearance) (mentioned)

Species

 * Humans
 * Demons (first appearance)
 * Cockroaches
 * Angels
 * Ghosts (first appearance)

Objects

 * Magic (first appearance)
 * Dark Magic (first appearance)
 * Protection Spells (first appearance)
 * Eye of Horus (first appearance)
 * Jasper Winters' Necklace (first appearance)
 * Sacred Cross (first appearance) (mentioned)
 * Star of David (first appearance) (mentioned)
 * Golden Helmet (first appearance)
 * Skull-Shaped Box (first appearance)
 * Demon Seal (first appearance)
 * Triangle of Solomon (first appearance)
 * Cloaking Spell (first appearance) (mentioned)
 * Taxi 173 (first appearance)
 * Constantine's Bag (first appearance)
 * Guns
 * Signal Guns (first appearance)
 * Richie Simpson's Van (first appearance)

Locations

 * Earth-1
 * Earth
 * UK (first appearance)
 * England (first appearance)
 * Northern England (first appearance)
 * Ravenscar Psychiatric Facility (first appearance)
 * Newcastle (first appearance) (mentioned)
 * USA
 * Georgia (first appearance)
 * Atlanta (first appearance)
 * Endeavor Car Rental Office (first appearance)
 * Liv Aberdine's Apartment (first appearance)
 * Talia's Apartment (first appearance)
 * Aberdine House (first appearance)
 * Jasper Winters' Millhouse (first appearance)
 * Illusion Falls (first appearance) (on Jasper Winters' map)
 * Seven Devils (first appearance) (on Jasper Winters' map)
 * Damnation Bay (first appearance) (on Jasper Winters' map)
 * Phantom Hill (first appearance) (on Jasper Winters' map)
 * Edgewood Avenue (first appearance)
 * Ivy Town (first appearance)
 * Ivy University (first appearance)
 * California (first appearance) (mentioned)
 * Liv Aberdine's Map
 * Alabama (first appearance) (seen on map)
 * Arizona (first appearance) (seen on map)
 * Arkansas (first appearance) (seen on map)
 * Colorado (first appearance) (seen on map)
 * Connecticut (first appearance) (seen on map)
 * Delaware (first appearance) (seen on map)
 * Florida (first appearance) (seen on map)
 * Idaho (first appearance) (seen on map)
 * Illinois (first appearance) (seen on map)
 * Indiana (first appearance) (seen on map)
 * Iowa (first appearance) (seen on map)
 * Kansas (first appearance) (seen on map)
 * Kentucky (first appearance) (seen on map)
 * Louisiana (first appearance) (seen on map)
 * Maine (first appearance) (seen on map)
 * Maryland (first appearance) (seen on map)
 * Massachusetts (first appearance) (seen on map)
 * Michigan (first appearance) (seen on map)
 * Minnesota (first appearance) (seen on map)
 * Mississippi (first appearance) (seen on map)
 * Missouri (seen on map)
 * Montana (first appearance) (seen on map)
 * Nebraska (first appearance) (seen on map)
 * Nevada (first appearance) (seen on map)
 * New Hampshire (first appearance) (seen on map)
 * New Jersey (first appearance) (seen on map)
 * New Mexico (first appearance) (seen on map)
 * New York (first appearance) (seen on map)
 * North Carolina (first appearance) (seen on map)
 * North Dakota (first appearance) (seen on map)
 * Ohio (first appearance) (seen on map)
 * Oklahoma (first appearance) (seen on map)
 * Oregon (first appearance) (seen on map)
 * Pennsylvania (first appearance) (seen on map)
 * Rhode Island (first appearance) (seen on map)
 * South Carolina (first appearance) (seen on map)
 * South Dakota (first appearance) (seen on map)
 * Tennessee (first appearance) (seen on map)
 * Texas (first appearance) (seen on map)
 * Utah (first appearance) (seen on map)
 * Vermont (first appearance) (seen on map)
 * Virginia (first appearance) (seen on map)
 * Washington (een on map)
 * West Virginia (first appearance) (seen on map)
 * Wisconsin (first appearance) (seen on map)
 * Wyoming (first appearance) (seen on map)
 * Egypt (mentioned)
 * Hell (first appearance) (vision)

Trivia

 * This episode's plot and concepts were later reused in after  was retconned into the Arrowverse.
 * This episode marks the first appearance of Magic in the Arrowverse.