 He acts as a linking point between Susannah (both Odetta and Detta), Jake, and ultimately Roland.When Odetta was five, Mort dropped a brick on her head (which led to the emergence of her multiple personalities); he also pushed Odetta in front of a subway car when she was a teenager (neither knowing nor caring that she was a previous victim of his cruelty).On the day Roland enters him, he is planning to shove a young boy (who turns out to be Jake Chambers) into traffic.