Theodore

Theodore has white hair and yellow eyes. He wears a black-collared and long-sleeved shirt under a blue suit complemented with a blue necktie. He also wears black pants with blue lines running through the sides, black shoes, and a hat similar to a flight attendant or even a bell boy. He also carries the Persona Compendium.

Though nothing is shown of Theodore's interactions with his sisters in P3P, some of his quests briefly hint at his relationship with them. Elizabeth's presence (or even just the thought of her) is implied to make him wary, as shown in Request #28 (which gives the task of finding a drink of Elizabeth's namesake), where he states that the "Queen Elizabeth" gives him a chill down his spine, leading to his decision of not drinking it. Additionally, his naïve and vulnerable nature is hinted at more during Request #63, where he mutters to himself of the time when "they" (hinting to Margaret and Elizabeth) fed him dog food (during which he had no knowledge of). He trusts his sisters' knowledge concerning the outside world, sometimes to the point of gullibility; he is fooled by Elizabeth telling him that cola is an ebon monster compressed into a metal cylinder, waiting to be released in order to be sprayed into the eyes of others. Elizabeth's disrespect towards him is further shown in the Q series, where she often forces him to wear strange costumes when he is in charge of a service. The only Velvet siblings that don't treat him in a disrespectful manner are Caroline and Justine (Lavenza).

Like his sister to the male protagonist, Theo develops feelings for the female protagonist as they spend time together around Port Island. The result, though, is tragic: due to Theo's duties as the Velvet Room's attendant, he is forced to break off the relationship.

The Velvet is a room located between consciousness and subconsciousness, only to a single persona user, and invisible to all except those with high spiritual sensitivity. It's purpose is always to manage Personas and use them in fusion. The Velvet Room appears as an elevator that is endlessly ascending and can only be accessed by the protagonist. The room's appearance as an elevator can be considered as a reference to SEES' ascension in Tartarus throughout the game. The room is still run by Igor; however, he makes no reference to being a servant of Philemon. The protagonist gains access to the Velvet Room after signing a contract with a child. Igor mentions that a long time has passed since he had a visitor. The other denizens are now gone, however, Igor has a new assistant named Theodore. Theodore would later mention that those who set foot in the Velvet Room are bound to be on a quest in search of themselves. When the protagonist creates "The Universe," the Velvet Room will stop ascending and the door to the elevator will fly open. The Velvet Room entrances can be found in Paulownia Mall below Karaoke Bar Mandragora at Tatsumi Port Island while the other can be found in Tartarus' first floor. When not with user, Theodore can be found here.

Personas are physical manifestations of a person's psyche and subconscious used for combat.

Igor has the appearance of a bizarre old man with a long nose, pointed ears and bulging, bloodshot eyes. He wears a black suit, white gloves, white or black socks and black shoes. He appears to be quite tall when fully stood up and is almost skeletally thin. In every Persona game to date, Igor has played the role of Proprietor of the Velvet Room, a space between dream and reality, mind and matter. As the proprietor, Igor provides insight to the protagonists regarding their powers, emotional bonds, and possible dangers that await them in their journey. Igor also provides the vital services of Persona fusion, which allows the creation of vastly more powerful Personas from preexisting ones and the use of the Persona Compendium, which allows previously created and/or acquired Personas to be recalled at a later time. Despite his rather striking appearance, Igor bears a calm and courteous demeanor while speaking with the protagonists. Though the well-being of the protagonists is important to him, he reserves the disclosure of certain information for more "timely" points in the story. During conversations concerning the protagonists’ actions, Igor opts for rather cryptic comments that tend to foreshadow coming events and possibly the outcome of the story as a whole, regardless of whether or not those comments are at the time understood (which may be his intent). This suggests that Igor may have near-omniscience, though by his own admission, there are things that even he can't foresee. Additionally, he also takes a neutral stance himself, and almost never directly interferes or gives obvious warnings to any people or anything that he had a contract with