Who is Tamotsu Fukada from 1Q84 and what is their importance?

Communist leader, Tamotsu Fukada, is Fuka-Eri's father, and the leader of the Sakigake. The Little People speak to him, forcing him to carry out their will. As a result, he suffers from extended bouts of physical paralysis. Aware he is dying, and yet, unable to take his own life, Fukada explains his life and his role to Aomame, whom he then convinces to kill him.