Cori

Cori is an eidolon inhabiting a middle floor of the Great Southern Tower. He blocks passage by possessing a large statue.
When adventurers met Cori in Delve: Great Southern Tower, he allowed them to pass after seeing them slay some demons. Cori explained that he was left there about 20 years ago by a woman named carmen, and that his job was to protect the tower from would-be looters and vandals . Carmen intended to return at some point to continue exploring the tower, which might contain useful ancient secrets.