Fahrenheit Characters
Lucas Kane
The protagonist in this video game is Lucas Kane. Raised on the remote Wishita military base by his scientist parents (the death of which severely affected him 10 years previously), he now works as a technical expert for Naser & Jones bank in Manhattan. Since his childhood, he has had periodic clairvoyant visions, the disturbing nature of which it is implied had a severe emotional impact on him as a child and drove him to isolate himself from others. These visions, apparently long dormant, suddenly increase in frequency following the events at the diner, accompanied by a dramatic increase in Lucas' physical strength and the emergence of telekinetic abilities, eventually allowing him to dodge bullets and fly. He is voiced by David Gasman.
Carla Valenti
Carla Valenti is the primary female protagonist of the game. A police inspector with the NYPD, Carla is one of two detectives called upon to investigate the murder committed. She is known among the other members of the department for her intense work ethic and commitment to her job (which sometimes tend towards excessive, as her devotion to her work is in part her way of compensating for her lack of any personal life, her only friends being Tyler, some colleagues, and her neighbour Tommy). Naturally inquisitive and completionist, Carla tends to brood over cases which are going nowhere, and will spend long hours poring over evidence in the hopes of finding one vital clue which she may have missed. She is also highly claustrophobic, and is prone to panic attacks when inside dark, enclosed spaces. She is voiced by Sharon Mann.
Tyler Miles
Tyler Miles is Carla's partner, who has a much more lackadaisical attitude towards life, although he is very devoted both to his job and his fiancee, Samantha Malone ('Sam' as he calls her). His relationship with her has always been close but has also been under constant strain due to her terror of him being hurt in the course of his job. The long hours and increasing cold have begun to sink his spirits greatly, and this latest murder case hasn't helped, leaving him to reconsider life as a police officer and perhaps leaving for Florida with Sam to run her parents' store. His hobbies include playing basketball, video games (which he often talks about or makes references to, including multiple instances of metafiction) and collecting 1970s memorabilia and vinyl Motown albums. He is also voiced by David Gasman. At the end of the game, the player can choose if Tyler should leave to Florida with his girlfriend.
Markus Kane
Lucas' older brother is Markus Kane, a priest at a local church. He worries about the current state of affairs involving his brother, but his faith prevents him from seeing very much past that facts, despite his best efforts. When they were kids, Markus tried to get Lucas, who was something of a loner, more involved with the other children on their military base home. He is voiced by Doug Rand. His fate is decided by the player. If he is rescued, the Invisibles explained the situation to him, making him realize that Lucas is telling the truth.
The Oracle
The Oracle is a man of unknown identity who appears in Lucas' visions after the murder. The Oracle is the main villain in the story and Lucas' archnemesis. He has only been seen wearing a gray hooded coat which hides his face, leaving his true nature a mystery. He is later revealed to be a Mayan oracle over 2000 years old, working for the Orange Clan to find the location of the Indigo Child. He also has telepathic abilities, allowing him to be forgotten by others even as they speak to him. He is also able to control who can see and hear him, as demonstrated in Lucas's flashback to the murder night, where we see that as though Lucas is sitting in the diner talking to the Oracle (albeit reluctantly), the waitress acts as if the Oracle isn't even there.
Minor characters
Tiffany Harper is Lucas' ex-girlfriend who shows up the day after the killing in the restaurant. It is suggested by some of Tiffany's comments that she broke up with him due to his intimacy issues. He still has feelings for her and it is possible to rekindle their relationship in the course of the game. She is kidnapped by the Oracle and used as bait. When Lucas comes to save her, the Oracle collapses the wooden rollercoaster where he was holding her prisoner and she dies from the fall. The last seen of her is her image on her tombstone in the cemetery. She is voiced by Sharon Mann.
The Indigo Child is a "perfectly pure soul, never before incarnated" who holds the secret of the meaning of life. Her coming has been anticipated since the beginning of time, and numerous factions are competing to gain possession of her, as the person who hears her secret will wield control of the entire universe (who this person will be depends on the actions of the player). She appears as a young autistic girl named Jade wearing the uniform of the Catholic orphanage where she lives.
Agatha is an elderly, blind, paraplegic woman who, using her psychic abilities, helps Lucas understand what happened to him at the diner. Despite dying early in the game, Lucas sees her afterwards in visions providing him background information. However this ghostly vision of Agatha is not actually Agatha, it is revealed to be a member of the Purple Clan masquerading as her so that Lucas will do their bidding. She is voiced by Jodi Forrest.
The Purple Clan is a group of Artificial Intelligences that come from "the Net", wish to use the secret of the Indigo Child to become the dominant species on the Earth and make human beings their eternal slaves. If Jade tells the Indigo Prophecy to the AI at the end of the game, Earth is plunged into an ice age, with the surface becoming near unlivable, and humanity driven to the brink of extinction. The Purple Clan has only recently revealed itself, and is the only rival clan of the Orange Clan. Since they do not have the Oracle to assist them in finding the Indigo Child, because Lucas possesses the powers of the Oracle, they work to manipulate him to help them complete the Indigo Prophecy.
The Orange Clan is an Illuminati-like secret society ruling the planet from behind the scenes. They know everything that goes on that is done by everyone, every second of everyday. They wish to utilize the secret of the Indigo child to become immortal and rule the Earth for eternity. There are five pillars that make up the clan including administration, police, finance, and the media. From back in the early days when each country had its own clan, they existed and were responsible for destroying all of the other rival clans. They are the last existing original clan and believe themselves to be the only clan left.
The Invisibles are a secret underground organization that monitors the other clans, and wishes to make sure that the secret of the Indigo Child does not fall into the wrong hands. The organization is made up of mostly homeless individuals who use the tendency of others not to notice them to gather information on the other clans. They are led by a homeless man only named Bogart, who is remarkably more intelligent than the drunken persona he adopts should people talk to him.