Gregg the Grim Reaper from Conker's Bad Fur Day.
But seriously, either Death of the Endless or DEATH from Discworld. They care in their own way about the people they are picking up. Interestingly enough, in both settings where you go after you die is really dependent on your beliefs. Diverging a little from the initial question of what personification of death would you prefer, I think that would be the ideal system for the afterlife - those that believe in it get heaven or hell, others get picked up by the valkyries, still others may have their hearts weighed by Anubis.