Holden is the eldest child and son of John and Alex Lowe and older brother of Scarlett. In 2010, at a carnival in Santa Monica with his family, he was abducted from a merry-go-round by Elizabeth. He now resides at the Hotel Cortez among her other blood-drinking children.
Holden showed up as a vision multiple times to John but every time that he tries to catch him, he disappears in the hallways. Holden met Lachlan after Elizabeth taking him around the hotel and showing him her children's game room hidden behind a sliding wall.
After Lachlan showed Scarlett an empty indoor pool where the children sleep in glass coffins, she recognised her brother, Holden, in one of the coffins. After coming back, she found him at the game room and asked him if he remembers their parents and her as well. When trying to take a selfie to prove that he is alive he tries to bite her and she leaves scared.
Alex visited John at the hotel and saw Holden when leaving. He greeted her and she took him home. She was surprised to see him and to find out that he didn't age even a bit. She tried to measure his temperature and the termometer shows 75 degrees. He said he's not feeling cold and he's okay but thirsty. She brought him juice only to find him killing the family dog and drinking his blood. He then said that he wants to visit his "other mommy" and took Alex back to the hotel. He led her to the empty indoor pool and went to sleep in one of the glass coffins.
John's increasingly confused murder board adorns the wall, and he wakes to a greeting by Holden. He runs after his son, happening upon the glass coffins where his son, wife, and the other children sleep.
- To Lachlan: "Hello. Wanna play?"
- To Alex: "Hey, mommy!"
- To Alex (about Elizabeth): "I need my mommy." Alex: "Baby, I am your mommy" Holden: "My other mommy."
- This is the first character portrayed by Lennon Henry.
- Holden is the most talked about children of the Countess.