They forgot everything.
The word Lethal comes from the Latin "letalis" which means deadly or fatal. That word shares an etymology with the Greek word "lethe" which means to oblivion. It was the name of one of the rivers of Hades, the Lethe. People who were granted passage to the Elysian Fields would first drink from the Lethe to forget their worldly lives and the pain associated with them.
Troubled Souls happened in 1994.
Dark Souls happened in 360.
Blazing Souls happened in 2006.
Souls in the System happened in 1996.
Demon's Souls happened in 2009.
Mansion of Hidden Souls happened in 1993.
Lost Souls - online game - happened in 1990.
The souls became a team and they chose the name the souls
The River Styx is the most well known river in the Underworld. It is the river of oath. Charon has to ferry the dead souls across it so they can enter the Underworld. The river Lethe is also an Underworld river. It is the river of forgetfulness. If you touch or drink its waters, you will forget your identity.
ARTHUR ADAMOV has written: 'DEAD SOULS/SPRING 71; TRANS. BY PETER MEYER'
Depending on what church, heaven, hell, or purgatory.