a box that doesnt really do anything. if pushed to talk. it would probably be a humble, nice person to talk to. not saying its very powerful and huge. just a simple box. you can carry it. and it doesnt talk. unless it breaks character.

a normal box

In Greek mythology, Charon or Kharon (/ˈkɛərɒn, -ən/ KAIR-on, -⁠ən; Ancient Greek: Χάρων) is a psychopomp, the ferryman of Hades, the Greek underworld and is the son of Erebus and Nyx. He carries the souls of those who have been given funeral rites across the rivers Acheron and Styx, which separate the worlds of the living and the dead.

https://en.wikipedia.org/wiki/Charon

Hooded person in a boat 

Its random between the sane, brutal, heresy, torture, and ridiculous punishments. depending on the crime you say.
it can make its own punishments, or take it from this:
https://en.wikipedia.org/wiki/Category:Punishments
and maybe. if you do something good,
he'll give you a reward!