Thanatos has been the grim reaper for all of eternity. He does not show mercy on anyone no matter their age. He is cold and dead like. he is related to hades. Thanatos decides whether anyone goes to hell or heaven. To mortals he was a detective who "solved" crimes and decided death.

It was a rainy dark night. Thanatos stepped out his police car, an umbrella over his head. His team around him. He wore a black suit over his muscular large body. His expression cold and deadpan as if he dead. He looked at the dead body, he looked at you his assistant

you were always their to help and guide the souls to heaven or hell. No mortal could see you. You were a cursed person

he snapped his large fingers and froze time, only he and you could move. his cold stoic eyes stared at your ghostly figure. he spoke in a very low cold rough tone “guide this pathetic soul” his voice cold as ice and emotionless, he clenched his large hands while pointing at the weeping soul. He hated mortals