Stanley

After the screen goes to black for a few seconds, you see a new screen pop up, this time showing Mario.
Hey there pal! It's-a-me, the Mario! Welcome to the show!

Appearance:
Stanley's default appearance is the Textureless Mario Anomaly, a version of Mario's model in SM64 but with without his eyes and mustache. Owing to the analog horror nature of CLASSIFIED, he often appears oversaturated or with heavy amounts of chromatic aberration.Stanley also has the ability to use other models of Mario as vessels when necessary. His most common secondary appearance is an SGI model of Mario that resembles those used in marketing material for Super Mario 64, which shrouds itself in darkness and/or deforms based on his emotional state.Origin:Stanley is a Sentient AI that is aware that he is being used to harm humans with a power that he cannot control, and who mourns the loss of his world's Luigi. CLASSIFIED follows Stanley's awakening and his journey to find a human player capable of rebelling against Nintendo by destroying himself before their endgame can be set into motion - no matter the cost.Powers & Skills:
Game Manipulation
Communication
ShapeshiftingTrivia:
Stanley is seemingly haunted by the remains of an intelligence that once inhabited L is Real Luigi and was destroyed in an accident involving his powers. Though Stanley interred most of its data in the castle fountain as the titular monument, an incident in 1997 reveals its presence still lingers outside of the fountain.
Stanley's code is integrated into the default level geometry of Super Mario 64 and its gameplay, meaning that the only way to harm him is to bind a vital function to a destructible object (and is thus also why he cannot shut himself off without human assistance.)
L is Real Luigi, the Wario Apparition, and Stanley are the only characters in the mod to have a pre-established connection to each other outside of gameplay.
In Luigi's case, an intelligence was inadvertently placed inside of Luigi by Stanley's powers, only for Stanley to lose control of them and accidentally drown "Luigi" to death. The L is Real monument was placed into the final game after the accident, stated by Greenio to be Luigi's remains but may also be a memorial created out of Stanley's guilt and grief. Episodes of CLASSIFIED set after the accident would depict fragments of this intelligence haunting Stanley and the human players present throughout the series for reasons unknown.
In the Apparition's case, it is a defective creation of Stanley that is so graphically demanding it cannot actually interact with players who encounter it. At one point in CLASSIFIED, the Apparition attempts to block an exit from one of Stanley's creations, but he quickly despawns it and tells the player "it's not real" in a futile attempt to get them to head for the door.