The characters within OFF are often entirely ambiguous and enigmatic. There are numerous central characters and villains, and throughout the game, the player will encounter many unnamed civilians. Motives and Morals are often called into question, and it is not entirely clear whether any specific characters are particularly good-natured or evil, or if there are any ulterior motives behind either nature.
The player of the game is said to be a character too, as many references are made to the player being the omniscient controller of the puppet-like protagonist.
The player of the game, or in other words, you. The player is never given a sprite or character. Rather, the player is given the role of guiding The Batter on his mission, and this control is acknowledged by the other characters. It is stated by The Batter at the beginning of the game that the player cannot speak to the characters but can see and hear.
The Batter is the main protagonist and the playable character of the game. He has no talk voice, possibly implying his silent nature. He is determined to purify the zones of the world and will let no obstacle stand in his way. Although he is sentient and aware that he is a puppet being controlled by a person playing a game, he appears to think and feel independently - but he hardly ever shares his emotions or opinions. He takes on a relatively monstrous form during the Special Ending of OFF. This change, however, is merely the perspective of The Judge/Player and not a physical transformation.
The Batter's Add-Ons
These are described as "peculiar objects,"spiritual entities", and "spherical" by the Judge. The Batter who, according to the Judge, has no "physical order" can get add-ons to join him, unlike the Judge. They fight alongside the Batter. Alpha, Omega, and Epsilon are conclusive all the add-ons the Batter obtains.
Zacharie (Zachary in the earlier English versions) calls himself the "traditional items merchant" that is present in every video game. His talk voice is the chuckling of a male, voiced by Duf. He is the omnipresent trader from whom the Batter can buy weapons and items in exchange for credits. He seems to be interested in the Batter's progress and is aware that the Batter is being controlled by an otherworldly player. His signature speaking style consists of a constant breaking of the fourth wall and chuckling. He is the only character who is conscious of OFF's universe as being a video game and he refers to this point at various intervals throughout.
The Judge / Pablo
The Judge is a talking, well-spoken cat assigned as the Batter's guardian at the beginning of the game. His talk voice is a purr of a cat, voiced by, interestingly, a real cat named John Vattic. The Judge, at first, believes the Batter's mission to be futile, but follows him around the various zones, offering advice or help.
Ghoulish ectoplasmic incarnations. The Batter was tasked with the sacred mission of purifying the land from these ghostly creatures. You will encounter them by the numbers in almost all of the Zones. What they are, why they are terrorizing the world of OFF and where are they coming from is a mystery as the focus of the game shifts towards other bigger things as the game progresses.
Dedan is introduced as the Queen's supervisor. His talk voice is a rough disturbing shout, voiced by MEH. Later on, he reveals himself as the Guardian of Zone 1.
He seems, from the start, to be a very aggressive character. He freely uses harsh language and almost everything he says is an insult or threat.
In The Room, Hugo refers to him as The Tall Mister.
Japhet is the Guardian of Zone 2 and the Library.
Many books in the library describe him and the story surrounding him. You can read the books in the Library to find out more about his back-story. They will explain that he is the creator and guardian of the library and has been turned into the form of a cat due to the spoken cat attempting to consume the bird, but not chewing properly, which The Judge recognizes as his brother, Valerie. You begin fighting him as a cat just like The Judge and then, as you fight, he reveals his true form of the bird with the skin of a cat hanging from his neck.
His death is linked to the death of another, and this situation highly upsets The Judge. This reaction is because the two are in a somewhat symbiotic relationship, and in purifying Japhet you also elicit feelings of sorrow in The Judge. The Judge will later be found at the top of the library calling out for his brother.
In The Room, Hugo refers to him as The Bird.
Enoch is introduced as "The Director" and after a short discussion, reveals himself as the Guardian of Zone 3 . His talk sound is a low-pitched laugh, voiced by Mortis Ghost himself.
He wears a white shirt, a black tie and a pair of black pants, like the Elsens. He is immediately recognizable because of his monumentally gigantic size, which The Batter comments on upon seeing him properly. However, despite his appearance, he is surprisingly fast and incredibly strong - some of Batter's attacks did not harm him at all, to the point where he was pushed to retreat.
Enoch does not appear to be very fit, and seems to have become much too comfortable in his little office deep in the middle of Zone 3.
In The Room, Hugo refers to him as The Big Mister.
Sugar is one of the two female characters in OFF and a hidden boss character. Her talk sound is the laugh of a female, voiced by ZE. She can be found in the basement of Zone 0 if you own at least one special item obtained from a purified zone. She speaks in emoticons such as :-) or :-(. Beating her will give you the Grand Chocolatier. It is implied that she and Zacharie have some back-story. In fact, one of the English translators said they were not only once friends, but lovers.
This statement may or may not be canon. Some fan theories say that Sugar could be Enoch's daughter or his creation due to Enoch creating the sugar element and Sugar's obvious affinity with the element, but Mortis Ghost stated that she was not designed by himself but a separate individual, making the chances of this theory low.
Hugo is a young, human child who appears in short cut-scenes each time a guardian is defeated, except for Enoch. His talk sound is a coughing of a child, voiced by Fred Phenix. His constant coughing may be implying his low condition of health.
A mysterious woman who appears to be the ruler of all Zones. Her talk sound is a mysterious whisper of a woman, voiced by Aureden. Interestingly, The Queen's voice in reverse says "va ranger ta chambre" which means "go tidy your room" in French.
She holds the name of Vader Eloha, which translates to "Father Christ". There are implications of a possibility of her being The Batter's wife, but it is not stated clearly throughout the game.
Following the fight between The Queen and the Batter, she is the only character to house Add-Ons besides from The Batter, which are known as Delta, Sigma, and Ipsilon.
Valerie is known to be the brother of The Judge, although he never actually made any appearance in the game himself. Japhet is first introduced inhabiting Valerie's body as a parasite, using him as a disguise.
"He was unable to chew through a little bird, even to the end." - Japhet
Inhabitants of Zones 1 through 3. Their talk sound is a sigh, voiced by Alias Conrad Coldwood - also known as the composer for the game. The sound is occasionally sped up or slowed down to fit their emotional state accordingly. They are extraordinarily timid, to the extent at which they can be considered mildly to severely neurotic. Even the rustling of book pages is unsettling for (some of) them, and the sight of a Spectre is enough to send (some of) them into a state of panic.