Mr Huffle
From Tardis Wiki, the free Doctor Who reference
Mr Huffle was the name of a squishy toy used by Lucy Fletcher when interrogating the Twelfth Doctor.
According to Lucy, he felt "pain". When squeezed, it would flatten out and squeak as it was inflating, mimicking the sound of a high-pitched scream.
The Twelfth Doctor took it with him when he left. (TV: The Return of Doctor Mysterio)
