Who is Tidbit from Copper Sun and what is their importance?

Tidbit is Teenie's four-year-old son. Because he is beloved by everyone around him, Tidbit has been spared much of the abusive treatment many slave children receive to prepare them for adult work in the fields. All this changes when Clay cruelly decides to use Tidbit as bait while alligator hunting. From this moment on, Amari makes it her motivation to protect Tidbit. This motivation is put to the test when Amari and Tidbit runaway from the Derbyshire farm and Amari adopts Tidbit as her own son.