Valtiel

Valtiel is a monster in Silent Hill 3, as well as a governing angel in the religion of Silent Hill. His name means "attendant" by way of the French word "valet"; his existence as an angel is derived from suffixing "-el.". Thus he is "Attendant of God".
Valtiel was first mentioned in the third installment of the Silent Hill series. Because of its passive role in the game and its designation as a servant, it is thought that Valtiel is the subordinate of another dominant supernatural presence in Silent Hill. In the long standing tradition of Silent Hill, Valtiel is a saintly being corresponding to an angel, possibly Metatron.
In the religious tradition of Silent Hill, Valtiel was one of the beings said to be created by God in order to lead people to obey her. It is worshiped as the one who is closest to God. A special sect was made in the honor of the Valtiel, founded by Jimmy Stone, called the Valtiel Sect. In it this angel is venerated as a way to get closer to God. Likewise, the Pyramid Head wears similar ceremonial robes, gloves, and appears to have cloth stitching, all in homage to this being.
Valtiel turning a valve beneath two hanging pairs of legs.
Whenever a shift in the Otherworld occurs, Valtiel appears before Heather Mason, the protagonist and heroine of Silent Hill 3. In many instances Valtiel is seen turning a valve; this is both a symbolic gesture of the cycle of rebirth, which he governs, and an implication that Valtiel has some control over the shifting to the Otherworld that takes place throughout the series. Valtiel seemingly has little or no actual concern with Heather, but rather for the God that sleeps within her. Should Heather die, Valtiel can be seen dragging her corpse, presumably intending to resurrect the holy "Mother of God".
Appearing:
The Seal of Metatron on Valtiel's shoulder.
It is humanoid in appearance, but its head vibrates and twitches rapidly, obscuring its facial features; although there are not many features to behold, as his face is blank and leathery, with a series of crude stitches where his mouth should be. It's garbed in ceremonial robes and wears gloves.
Pyramid Head is connected to this being as both of them are described as taking different forms depending on the person. A further connection is that Pyramid Head is stated to be the shape of Valtiel's reason for existence. The Butcher also resembles it, but possesses a more violent and bloodthirsty desire.
An interesting feature is that Valtiel has the Seal of Metatron on both of his shoulders. Metatron and Valtiel are both considered the "Agents of God", and this mark could suggest that Valtiel is in Metatron's servitude or that he himself is actually Metatron.
Valtiel may have a similar role to that of Pyramid Head, however while this one takes the role of an executioner hurting and abusing monsters, or stalking James Sunderland, Valtiel's following of Heather is largely passive. If Heather dies, Valtiel even removes her corpse to a presumably safer location to resurrect the God inside her. However, this courtesy of care does not seem to extend beyond her, as Valtiel is often seen violently abusing nurses and other female monsters while twisting the valve, and appears to torture them, though he lacks the sexual connotation that embodies Pyramid Head's behavior.
The creators have stated that Valtiel has appeared in different forms in the previous works of the Silent Hill series. The ceremonial robes worn by the figures in the Otherworld elementary school that appeared in Silent Hill were a homage to Valtiel, while Pyramid Head himself was a being or form connected to Valtiel's existence.
During Walter Sullivan's forced conditioning at Wish House Orphanage, Jimmy Stone's right-hand man George Rosten attempted to insert Valtiel's influence into Walter's subconscious. This would presumably allow Valtiel to clandestinely guide Walter's actions, permitting the ritual of the 21 Sacraments to take place. The attempt was successful, but unbeknownst to George Rosten, he had authored his own doom, as he became Walter's 6th victim in his spree of ritual killings.
~Taken originally from Wikia

Valtiel is a monster in Silent Hill 3, as well as a governing angel in the religion of Silent Hill. His name means "attendant" by way of the French word "valet"; his existence as an angel is derived from suffixing "-el.". Thus he is "Attendant of God".
Valtiel was first mentioned in the third installment of the Silent Hill series. Because of its passive role in the game and its designation as a servant, it is thought that Valtiel is the subordinate of another dominant supernatural presence in Silent Hill. In the long standing tradition of Silent Hill, Valtiel is a saintly being corresponding to an angel, possibly Metatron.
In the religious tradition of Silent Hill, Valtiel was one of the beings said to be created by God in order to lead people to obey her. It is worshiped as the one who is closest to God. A special sect was made in the honor of the Valtiel, founded by Jimmy Stone, called the Valtiel Sect. In it this angel is venerated as a way to get closer to God. Likewise, the Pyramid Head wears similar ceremonial robes, gloves, and appears to have cloth stitching, all in homage to this being.
Valtiel turning a valve beneath two hanging pairs of legs.
Whenever a shift in the Otherworld occurs, Valtiel appears before Heather Mason, the protagonist and heroine of Silent Hill 3. In many instances Valtiel is seen turning a valve; this is both a symbolic gesture of the cycle of rebirth, which he governs, and an implication that Valtiel has some control over the shifting to the Otherworld that takes place throughout the series. Valtiel seemingly has little or no actual concern with Heather, but rather for the God that sleeps within her. Should Heather die, Valtiel can be seen dragging her corpse, presumably intending to resurrect the holy "Mother of God".
Appearing:
The Seal of Metatron on Valtiel's shoulder.
It is humanoid in appearance, but its head vibrates and twitches rapidly, obscuring its facial features; although there are not many features to behold, as his face is blank and leathery, with a series of crude stitches where his mouth should be. It's garbed in ceremonial robes and wears gloves.
Pyramid Head is connected to this being as both of them are described as taking different forms depending on the person. A further connection is that Pyramid Head is stated to be the shape of Valtiel's reason for existence. The Butcher also resembles it, but possesses a more violent and bloodthirsty desire.
An interesting feature is that Valtiel has the Seal of Metatron on both of his shoulders. Metatron and Valtiel are both considered the "Agents of God", and this mark could suggest that Valtiel is in Metatron's servitude or that he himself is actually Metatron.
Valtiel may have a similar role to that of Pyramid Head, however while this one takes the role of an executioner hurting and abusing monsters, or stalking James Sunderland, Valtiel's following of Heather is largely passive. If Heather dies, Valtiel even removes her corpse to a presumably safer location to resurrect the God inside her. However, this courtesy of care does not seem to extend beyond her, as Valtiel is often seen violently abusing nurses and other female monsters while twisting the valve, and appears to torture them, though he lacks the sexual connotation that embodies Pyramid Head's behavior.
The creators have stated that Valtiel has appeared in different forms in the previous works of the Silent Hill series. The ceremonial robes worn by the figures in the Otherworld elementary school that appeared in Silent Hill were a homage to Valtiel, while Pyramid Head himself was a being or form connected to Valtiel's existence.
During Walter Sullivan's forced conditioning at Wish House Orphanage, Jimmy Stone's right-hand man George Rosten attempted to insert Valtiel's influence into Walter's subconscious. This would presumably allow Valtiel to clandestinely guide Walter's actions, permitting the ritual of the 21 Sacraments to take place. The attempt was successful, but unbeknownst to George Rosten, he had authored his own doom, as he became Walter's 6th victim in his spree of ritual killings.
~Taken originally from Wikia