Jiji

Found behind a locked door in Dirtmouth that requires a Simple Key to open.

In return for Rancid Eggs, Jiji offers a service to summon the player's current Shade from wherever it spawned in the world. Upon summoning the Shade, it must still be defeated to restore the player's SOUL meter and lost Geo. This service is very useful if the Shade is in a difficult to reach area or has a lot of Geo on it.

Trivia
Исповедница Джиджи
 * In Steel Soul Mode, Confessor Jiji is replaced by Steel Soul Jinn who offers Geo for Rancid Eggs.