Molly
(a.k.a. "The Mollies")
Whenever you enter a Spire, you will encounter a stern-looking receptionist named Molly. She will always greet you. If she recognises you, she will address you by your full name.
If she does not recognize you, she will ask you for your name and then note it down in her book. Only after she has the correct name in her book will she grant access to the Spire.