- "All those people wasting away by your hand as life passes them by... That is not the legacy you want, Felix."
- " And what would you know of legacy? A boastful, smutty, infantile boy. You create magic by accident and insolence, while the truly devoted sweat and toil with no reward. You'll never know my magic, Constantine. You will know my pain."
- —John Constantine and Felix Faust[src]
Studies from the shadows
According to Constantine, Felix Faust dedicated most of life learning black magic from the greatest magician of his generation, although Faust claimed to have invented the spells which brought renown to his teachers, and as such, he lived the remainder of his life in their shadow.
Confrontation with Constantine
Faust met John Constantine sometime in the past, and in one instance lost his pocket money to Constantine during a poker game in Hell's Kitchen, New York City. It was during such meetings that Constantine had though very little of Faust, viewing the old man as a washed-up second rate magician. Subsequently, Faust bore a strong contempt for Constantine and saw him as fraud and con-artist who gave proper magicians a bad name.
Mastering Dark Magic
In his twilight years, Faust had successfully created a spell that could remove human souls from their still-living bodies, a feat believed to be impossible up to that point, and decided to continue working for himself. Faust moved to New York City and established a base of operation inside a warehouse of the abandoned Haskins railroad yard just outside Brooklyn. From there he was able to use the spell and steal the souls of several inhabitants of the neighborhood, including Geraldine Chandler, daughter of Chas Chandler, Constantine's closest ally. 
Accompanied by Chas and Zed, Constantine approaches Fennel, a local medium, to ask for help in locating the source of the stolen souls. The medium is killed by Faust before he could uncover the wizards lair, however Zed manages to locate it with the use of her own psychic powers. Arriving at Haskins railroad yard, Constantine confronted Faust in his own hideout but is incapable of stopping the wizard or risk having the captured souls destroyed. Faust proposes an agreement in which he would release Geraldine's soul in exchange for Constantine banishing a local soul-devouring demon Karabsan back to Hell. John agrees to the wizards terms and sets out after the demon along with Zed. When the banishment fails and the demon risks eating Zed's soul, John is forced to kill it. Realizing that John failed to uphold his end of the bargain Faust refuses to release Geraldine.
In a desperate attempt to rescue his daughter, Chas offers up the thirty two souls trapped in his body. At first, Faust dismissed the offer until witnessing Chas slitting his own throat and subsequently coming back to life. He agrees to return the girl's soul back to her body and in return claim thirty two souls, including Chas's own soul. As the two are about to seal the agreement they are interrupted by Constantine who pleads Chas to bail on the agreement. Instead, the agreement proves to be a double-crosses as Chas ties his hand together with that of Faust using the magical Sinew of Achilles, then he pulls out a grenade from his back pocket and blows himself-up along with Faust. With the wizards's apparent death the hostage souls return to their bodies.
Powers and abilities
- Magic/Dark Magic: Felix Faust is an accomplished mage with vast knowledge in the field of black magic. According to himself, he had created a large assortment of powerful spells which brought fame to his masters.
- Cloaking spell: Described by John Constantine as being an "elementary spell", Felix Faust used it to conceal his hideout, rendering the building invisible.
- Possession: Felix was able to possess the channeler Fennel as if he was a spirit.
- Pyromancy/Pyrokinesis: With just a snap of his fingers, Faust was effortlessly able to cause a picture to ignite in flames. He is also able to use fire to channel himself through space, possessing Fennel before burning him to crisp, a long distance away from the channeler.
- Soul separating spell/Empowerement from souls: Initially believed to be an impossibility, Felix Faust developed a curse that could steal a human's soul completely from a still living body. In order for the spell to have effect, Faust must be in close proximity of his victim and recite a Latin incantation which conjures up a gust of grey smoke which enters the body and removes the soul. The curse remains in affect for two days, time in which the victim's body falls into a catatonic state and their nose begins to bleed profusely. Breaking the curse requires the spell caster's death.
- Telekinesis: Without having to recite any incantation Faust could easily use telekinesis on unsuspecting opponents by pointing his hand at them and then waving it in different positions. Opponents being controlled by the spell feel excruciating pain.
- Occult knowledge: As a sorcerer, Felix has vast knowledge of the occult.
- Robe and hood: Felix used an identity-concealing hood and vast robes to protect his identity from people who could see him casting his dark magic, both witnesses and mediums, like Zed Martin.
- Enchanted dagger: Felix used a presumably enchanted dagger to damage Zed's astral projection, leaving scars on her physical form a great distance away from him.
- Stone of true seeing: Felix gave this artifact to John Constantine, allowing him to see the invisible demon Karabasan.
Behind the scenes
- In DC Comics, Felix Faust is one of the most powerful warlocks in the entire DC universe, often pinned against the Justice League and Justice League Dark. The character was created by Gardner Fox and Mike Sekowsky in March of 1962, first appearing in Justice League of America #10.
- As his name and status as a sorcerer would suggest, Felix Faust is named after famed German folklore character Doctor Faust, an intellectual who sold his soul to the devil Mephistopheles to gain ultimate knowledge and satisfaction. Within the context of the comic books, the sorcerer christened himself after the legendary Doctor Faust and made pacts with devils in exchange for magical knowledge.
- While John Constantine and Ritchie Simpson are reprised by Matt Ryan and Jeremy Davies respectively in the animated Justice League Dark film, Felix Faust was voiced by Enrico Colantoni rather than Mark Margolis. The film is not part of the shared multiverse, instead being released as part of DC Universe Animated Original Movies.
- Felix Faust's rant towards John Constantine highlights the differences between mages/wizards and warlocks/sorcerers present in various fantasy settings. Commonly, by the stapple popularized by Dungeons & Dragons, wizards get their magic from careful study, learned incantations and experiments, while sorcerers have innate magical power that they summon through will and charisma. In this case, Felix plays the role of a wizard, who has studied his whole life to achieve power, while John is a naturally talented sorcerer and a sacrifice-using warlock.