Persona 3Edit
The Reaper lurks in Tartarus, and will appear to the player when certain conditions are met. This involves staying in one floor of Tartarus too long, or choosing a card from Shuffle Time that is appended with an ominous black crossbone. When he approaches the party, the player can hear a loud rattling of chains, and he also appears on the mini-map. The Reaper's appearance is hastened when choosing a skulled ("cursed") card in Shuffle Time or when on a regular floor with no Shadows. He also appears on a floor where there is NO regular shadows, only a floor filled with rare golden shadows or rare chests, as the risks of the large rewards are all affected by "cursed" cards.
The Reaper cannot follow the player to the stairs that lead to the next floor, which makes the stairs a safe haven from the reaper. Unless the party is Lv.70 or higher, The Reaper will be an almost impossible opponent.
Persona 4Edit
The Reaper is an exclusive boss that can only be fought in the second playthrough of the game. In the second cycle, the Reaper can be found in ordinary chests, and upon examining it, the Protagonist is forewarned that a powerful force dwells within the chest and repeatedly asked whether he is ready to open it. Should the Protagonist choose to open it, the Reaper will attack the Protagonist, engaging the party to a battle. Similar to its predecessor, the Reaper can be challenged multiple times as long as the Protagonist manages to locate the treasure chest he dwells within.
Defeating the Reaper grants the respective characters their strongest weapons per defeat;