Kenneth

Unknown, but his absence and Hall’s desperation to find him suggest he holds critical information or power within the scheme. The Doctor’s focus on Ken as the next lead implies he may be a reluctant participant or a mastermind.

Unreadable but potentially anxious. Ken’s absence and the Doctor’s deduction of his left-handedness suggest he is operating cautiously, aware of the risks involved in the TARDIS theft. His connection to the matchbook implies a level of forethought and planning, but his emotional state remains speculative.