Shaun is a young boy with short dark hair, greyish-purple eyes, and pale skin. He usually wears the standard male "Living Doll" uniform or a portrait when serving as John's "face". He's also been known to wear glasses in private since John doesn't need them.
Before entering the House, he wore a white dress-shirt, dark-blue pants with suspenders and black shoes as well as his glasses.
Shaun is quiet, intelligent and in tune with his surroundings. His top priority is taking care of his master, John. He's hardworking and doesn't fight unless provoked. He's very caring towards his friends and has been known to be quite blunt and sassy. He's on good terms with his master and isn't afraid to speak up if he disagrees with him.
On the day before the selection, while going home with his siblings, John noticed Shirley dropped her circus ticket and came to return it. She told him that she didn't want to attend the selection because of her fear of being a burden but John reasured her and changed her mind about it.
The 4 of them went to the circus where they met a nameless orphan girl named, Emilico. They decided to help her get into the selection with her using a fake name - "Kate". The next morning, John, Louise and Patrick came to Shirley's house, where they helped "Kate" get ready. John tried to style her hair similar to his little sister's. Patrick's words about "outer appearances being important", insipired him to hide his poor eyesight to seem more capable for work in Shadows House,After the selection, John, along with others, was brainwashed via coffee and brought into the House, where he was approached by a morph.
John trusts Shaun and has a great liking to him. Though the Shadows House teach the "Faces" to be like their Shadows, John offered to wear glasses so that Shaun, who has bad eyesight, can wear them too.
Emilico is Shaun's closest friend among the living dolls. They met when Emilico was trying to protect Mia from Barbie. Shaun was observing the scene closely and when Barbie was about to possibly hurt Emilico, he stepped in to protect her, even though he said that it was just because Barbie was getting on his nerves. They became closer during the night patrol, along side Rum and became great friends. At the debut, Shaun wanted to join Emilico. He is shown throughout the manga to think about Emilico quite a lot. He would often think "What would Emilico do in my situation?" With time, Shaun became protective towards her and is seen to be jealous towards Ollie. Ollie starts/tries to become close to her, due to his fascination of Emilico's high athletic ability.
Ricky and Shaun knew each other because they were in the same cleaning team. They don't seem to like each other, but they don't hate each other either. Their arguments are rather childish but they know how to get along. The events of the debut made them reimagine things, leading to Shaun apologizing for thinking bad about Ricky on impulse, and Ricky showing his true emotions by crying and begging Shaun and John to take care of Patrick for him.
After the Debut, they didn't interact a lot. Though Shaun and Ricky bicker, they are still friends and somewhat care about each other.
Rum and Shaun get along pretty well. They met during the night patrol with Emilico. They considered each other as friends and wanted to meet again, alongside Emilico, after the Debut.
- Shaun is a boy's name that is of Irish and Hebrew origin, meaning "God is gracious".
- According with some fans calculations, Shaun's height is around 155 cm