|Full name:||Sebastian Albert Pearce|
|Died:||c. 2059 (aged 15)|
|Parents:|| Unnamed father|
|Affiliation:||Performers of Sheol I|
|First appearance:||The Bone Season|
Sebastian Albert Pearce, also known as Seb, was the boy Paige Mahoney could not save. He was brought to Paige as her test for becoming a pink-jacket. Nashira Sargas asked Paige to kill Seb, but Paige could not do it; so, in turn, Nashira killed him herself.
Seb's spirit was discovered to be the guardian of the padlocked door leading to the train station when Paige and everyone in Sheol I were escaping. Paige was able to convince him to open the door, and shortly after she released his spirit by speaking the threnody.
Sebastian is a Latin name that means "from Sebaste," which is derived from the Greek word for "venerable."
Pearce is a derivative of Piers, an Old French and Middle English form of Peter (rock).
- The Bone Season (first appearance)