The Mirror Monster is an evil magical creature, who lives inside a magic mirror at Castle Revolta.
He has the power to turn into a demonic duplicate of whoever stands in front of the mirror, as well as trap and hold them captive inside if they stand in front of the mirror for too long.
He traps Shaggy Rogers inside the mirror and chases after Scooby-Doo as an evil duplicate of Shaggy.
Physical appearance[]
The Mirror Monster is identical to Shaggy from the neck down. He shares the exact same outfit as Shaggy. His facial features, however, are very different from Shaggy's; his eyes are red and yellow, his ears are tall and elfish-looking, his goatee is longer, and his mouth is filled with pointed teeth. In the TV bumper and end credits, he is barefoot with the ends of his pant legs torn up.
Personality[]
The Mirror Monster has a sadistic personality in contrast to the real Shaggy; as soon as he is freed from the mirror, he begins following Scooby with intentions unknown beyond intent to harm. He seems to be somewhat naïve, as he is at first fooled by Scooby's mummy disguise, and like his mirror counterpart is also somewhat cowardly, shown when he flees immediately when Matches fearlessly burns him to save Scrappy.
History[]
Scooby-Doo and the Ghoul School[]
As Shaggy, Scooby-Doo, Scrappy-Doo, and Matches enter Castle Revolta in search of the missing Grimwood Girls, and Shaggy and Scooby accidentally find the magic mirror in the entrance hall after splitting up from the others. Scooby-Doo sees his own evil reflection in the mirror and runs away quickly to get Shaggy. Shaggy thinks it is a distorted reflection, just like a fun-house mirror, which is at the carnival, but when he turns his back, the Mirror Monster catches and drags him over into the mirror and takes his place to remain Shaggy trapped in the mirror.
The Mirror Monster begins following after Scooby, who runs away as soon as he sees that he isn't Shaggy when he finds that he is at first. Scooby briefly manages to fool the Mirror Monster by disguising himself as a mummy, but when the Mirror Monster sees through it, Scooby accidentally bumps into him, and flees from him again, inadvertently jamming a mop bucket on the monster's head. Scrappy and Matches find him and, thinking him to be Shaggy, Scrappy inadvertently removes the bucket, only to put it back upon seeing the monster's face for thanking him. The monster removes it again, and when it hits Matches, who can't see, the monster grabs Scrappy, who threatens the monster, who disregards the threats up until an incensed Matches blows fire at his backside. The monster drops Scrappy and flees, and for good measure, escapes from Matches, who burns him again. The monster immediately returns to his mirror, deeming the outside to be too dangerous, and grabs and dumps Shaggy back outside and throws him out.
He is presumably killed in the exploding castle, because it is unknown if he actually survives.
