Henry wakes up one morning to find that he's been trapped in his own apartment.Henry is number 21 of the 21 Sacraments, "The Receiver of Wisdom", the final stage of Walter's ritual to "awaken his mother".
Henry is infamous for "What the hell?", even though he says it only four times throughout the game, or (for those keeping track at home) only one fewer time than Harry Mason describes his daughter to people as "just turned seven last month, short, black hair" And, one presumes, this is only because he ran out of people to ask.
He says it a lot more when inspecting items and environments.
Death Glare: Henry might be known for not showing much reaction to things, but check his facial expression at the start of the last boss fight. Dude looks pissed.
The Needless: It's not elaborated on, but it seems that Henry doesn't need to eat as long as he's in Room 302. Examining his stove at different times will make him comment that he should be hungry, but isn't.
Hikikomori: The game is an odd exploration of this trope. He was a reclusive agoraphobic before the events of the game, but during the game...
Ironic Hell: An agoraphobic who can't leave his apartment. Gotcha!
Kuudere: Henry shows a lot of willingness to help others but rarely expresses the fact. Justified in that he never really expresses much of anything.
Shrinking Violet: Henry is mentioned by the others as very shy, so it's not seen to be too strange when he doesn't emerge from his apartment for days on end.
The Stoic: Whatever emotions Henry may have, he certainly doesn't express them very strongly, leading to many Dull Surprises.
Supporting Protagonist: Henry is the focal character, but the story really revolves around Walter; Henry is just in the wrong place at the wrong time.
Voiced by: Anna Kunnecke
Henry's next-door neighbor. She's upbeat and perky.Of the 21 Sacraments, she is "The Mother Reborn". She should have been killed by Walter, but he was stopped by the mysterious boy (Young Walter). She still suffered many injuries and was sent to the hospital, but ended up being sucked into the dark world again; this time, Henry managed to get to her before Walter did, taking her under his care and protection. She cannot die, but she does suffer damage, which affects her survival at the game's end.
Artificial Stupidity: During the extended escort mission, she becomes more or less aggressive depending on what weapon she's holding. This would be fine, if she didn't insist on attacking Walter (who is invincible), which if allowed to go on long enough will result in her damage level skyrocketing as he beats her up. The only way to get her to stop is to take her weapon away, forcing her to follow Henry as closely as possible.
Bandage Babe: Emphasis on the "babe", especially with the Nurse outfit on.
Future Me Scares Me: The scene with Little Walter meeting his future self. Little Walter doesn't quite grasp the implications, but the player does.
He-Man Woman Hater: Has issues with the fairer sex, evidenced by his brutal beatdown of Eileen, as well as Cynthia's bloody death. Also makes a pastime of mutilating female cadavers, which rise again as scary ol' giantesses.
The Illegible: Walter's personal diary is scattered throughout the Forest area on stones; however, Henry is unable to make out several passages due to the script being very childish and scrawling. Eileen is able to translate them when you return later.
When he started killing, police were unsure why he was carving numbers like "01121" into his victims. It turns out that the middle character was actually a slash — "01/21". He was counting his victims down.
Implacable Man: Being that he's a ghost himself, Walter Sullivan absolutely Can. Not. Be. Killed. You can knock him down or pump him full of lead, but he'll always rise back up again.
A journalist introduced back in Silent Hill 3 as a writer of a magazine article regarding Silent Hill's Wish House, where Walter was raised. In this game, he's the former resident of Room 302 before Henry moves in. He's also Walter's 15th victim, "The Giver of Wisdom", who's supposed to serve as a guide for Henry, "The Receiver of Wisdom".
Meaningful Name: His last name is Schreiber, which is German for writer, and he's a journalist.
Mr. Exposition: When Henry finds him in Room 302 of the Past, he explains Walter's backstory, as well as the means to stop Walter. He's also the writer of the Red Diary excerpts which Henry keeps finding slipped under his front door.