It occurs to me that not everyone knows who these guys are. So here's a quick recap.
Death: OK, she seems to be winning this, so no need for a summary.
Black Racer: The horrifying end of days of SKIS! Chases down gods and speedsters, an aspect of Neil Gaiman's Death.
Susan: Adoptive granddaughter of Death, schoolteacher, and occasional reluctant replacement for Death. Wields a fireplace poker. Imagine a goth Mary Poppins.
Izanami: In Japanese mythology, she helped make the world with her husband. Now she kills one thousand people a day to spite him. Today, she's taking a less direct approach by reducing humanity to a state between life and death through the powers of an evil, fog-generating disco ball and television. Works as a gas attendant on rainy days. Doesn't like the truth.
Bleach characters: The series deals with spirits who usher the souls of the dead. They use swords in a way that rivals DBZ in pure showmanship. And they are all very, very, pretty.
Hades: Through the power of Disney magic, he was turned from the grim and brooding Lord of the Underworld to a salesman-like Satan analogue. But he's cool with that, because he's voiced by James Woods, gets to act like Gene Hackman, and gets hair made out of fire.
Your Mom: Self expalantory.
Bass' Mom: Even more self explanatory.