Death

Death is a Primordial Horseman/Entity who is in charge of carrying deceased human souls to Heaven and Hell as well as carrying deceased Monsters to Purgatory. Death is so old that he can't remember if he or God is older, but it is known God is stronger. Death notes one day he will reap God, but this doesn't mean Death can kill God. Death is the weakest Primordial Entity, but is still superior in power to everything/everyone except God, The Shadow and The Darkness, and with the latter two being dead, he's only below Vanessa Russell, Conan, and God. Death's human name for when he appears on Earth is David Grimes. Death is still alive on every Earth except Earth 210, where Luna Russell/Aurora becomes the new Death by stabbing Death with his scythe, the only thing that can kill him. Right before he dies she absorbs his powers, right after Luna absorbed his powers, he crumbled to dust and most likely ceased to exist. On Earth 210 as well, Conan becomes The new God by finding The Shadow's Tablet by venturing deep into Hell where not even Garmr has the guts to go. With this tablet it made him invincible to everyone and everything. So him and his cousin Luna teamed up as the new God and Death. Death is still alive on Earth 1 though, and when Murphy Black reached his downfall, Death transported his soul to Hell, just like he does with the other damned souls. Death likely won't ever appear in Rebirth, but his surrogate son known as Azrael debuted in Kingdom Episode 4, and Azrael is in essence The Grim Reaper.

'''"To a thing like me, a thing like you well, think how'd you feel if a bacterium sat at your table and started to get snarky, this is one little planet, one tiny solar system, in a galaxy that's barely out of its diapers." - Death to Humans'''