A place with so many immortals... it had been a while since Death had been anywhere with a lot of anyones at all. Living in a realm of darkness where eternity ends wasn't the best place for social interaction. The Death of Rats wasn't exactly the best company.

IT'S... DIFFERENT, he said truthfully.
WHAT ABOUT YOU? HAVING ALL THIS POWER. IT MUST CATCH UP AT TIMES, said Death.

Despite the parallels in their abilities, Death couldn't understand what it was like to be the Adam. Death was humanity's shadow, without him, it could not continue. Adam had no purpose beyond bringing humanity's destruction, and now he was attempting to change his fate.

ER. I SUPPOSE YOU CAN CALL ME BILL DOOR, said Death, who was of very limited imagination capabilities.