Watch is Oscar Nicholls' watch, who is activated by the watch poem.
Overview and watch poem
Watch and the Bands (microscopic human-like creatures living on Oscar's palm) are best friends. He can keep track of HO supporters and HO's location. He acts like a real watch most of the time, but behaves like a computer when the following poem is recited: "Watch, Watch, on my white, which person is right?"