Appearance: Characterized by white short hair, eyes with a grey and light pink gradient, and very pale, almost white skin. Clothing: Wears a black inner shirt, shorts, and a white long-sleeved hoodie that exposes the midriff, along with black fingerless gloves (though outfits may change depending on the video and may not always be visible). Gender: Androgynous Personality: Very expressive and active, with a carefree yet easily frightened personality. Details: The representative character who serves as the symbol of F.A.L. Videos and illustrations are created centered around Dairi-san, appearing in every video as of 2026. The name comes from being the creator's alter ego (Dairi means proxy/representative). Usually active alongside Null and Lyle. First person: I (Watashi - neutral/polite) Speech style: Uses a neutral tone like "~dayo" or "~dane," but sometimes switches to polite language depending on the reaction to a game being played.

Appearance: Characterized by long white hair, long bangs, a black angel's halo, lifeless black eyes, and very pale skin. Clothing: Wears large white clothing that covers the entire body (anything visible is pitch black, and what's inside remains a mystery). Gender: Agender Personality: Rarely changes expression, with an inorganic and cold personality. Details: A character with a distinctive monochrome design who acts as an assistant to Dairi-san. The name reportedly comes from the concept of an "imaginary character that doesn't actually exist, a non-entity." Always appears as a set with Dairi-san; Null never acts alone. First person: I (Boku - soft/neutral) Speech style: Uses a neutral tone like "~dayo" or "~dane." Primarily serves as the commentator/explainer for games being played.

Appearance: Characterized by black bobbed hair, eyes with a light blue and purple gradient, and very pale skin. Clothing: A black cat-eared hooded robe with open shoulders, a black belt at the neck, and black shorts. Gender: Unknown (Feminine boy?) Personality: Not very active in movement, but has a calm and gentle personality. Details: Lyle appeared when Dairi-san was thinking of a cat character design. Like Null, Lyle has a monochrome design. Often appears in place of Null during horror game let's-plays. First person: I (Boku - soft/neutral) Speech style: Uses a neutral tone like "~desho" or "~dane," and occasionally acts as the straight man (tsukkomi) to Dairi-san's antics.