How is Killer Kane described when attacking Loretta Lee?

In chapter 19, Killer Kane ties up and gags his son, Max, in the basement of an abandoned building. Loretta Lee attempts to free Max while Iggy keeps Killer Kane occupied upstairs. As Loretta Lee is attempting to loosen the knots around Max, he notices that her hands are shaking, and he can hear his father's ominous footsteps upstairs. Shortly after freeing Max, Loretta attempts to grab the flashlight and is suddenly attacked by Killer Kane. Max watches his massive father wrap both hands around Loretta's neck and begin to squeeze. As his father is choking Loretta to death, Max describes him as being made of "iron and steel" while he grits his teeth and squeezes with all his might. Max feels helpless at the moment and describes the "killer look" in his father's eyes, which is the same look he had when he killed Max's mother. Max responds by yelling that he witnessed his father kill his mother, which gets Killer Kane's attention. Killer Kane then attempts to murder Max, but Freak comes to the rescue.