Grave is a monster Logan Taylor encounters in Silent Hill.
Grave resembles a human being, however it is at least double Logan's size and has a grotesque, decayed look, much like a deteriorated body, and it is mutated in many ways. The creature is essentially a "boss" monster. It is aggressive toward Logan and wants nothing more but to see him dead.
Grave represents Logan's dead mother, and the grief Logan felt when he himself buried her after her death in a cemetery, without a proper burial. Grave confronts Logan by climbing out of the ground, and wishes to see Logan killed and buried much like it was. Logan eventually defeated it, making it reveal his mother's dead body, partially preserved. He took the time to give her a proper burial, therefore banishing his grief and finding atonement for his mother, and ridding himself of Grave forever.