Jack Shilcock is the identical twin brother of John Shilcock. Together, the brothers are the teachers at the vault school. They are always found together, and take part in each other’s dialogue. They are quick talkers, and often finish each other’s sentences. They will ask the player to recover educational materials for the school, and will occasionally teach classes. Jack has approximately 59 lines.

Line 01 context: Excited to see a guest.

Line 02 context: Outraged when the player rubbishes school.

Line 03 context: Palming off a difficult question onto his brother.