The Private Eye Lizard (プライベートアイ・りざあど Puraibētoai Rizādo) is a detective agency located in room 326 of an abandoned aboveground hotel in the Western District of the Artificial Island. It is also the residence of Charlotte and Sherlock Liverpool.

Charlotte is the founder of the agency and its sole detective. In the winter of 2020, some mainlanders request that the agency assist them in locating Takehito Isegawa.