Yes, there was a Loki with us for some years, but he was in no way shape or form the same man that you are. Graduated, served as a Warden through one or two Inmates, and then moved on. There have also been other Lokis who were very much the same man that you are. It is all rather confusing, but without having their files I could not say whether they were you, and that you have forgotten, or if they were you, only from different planes of existence, alternate timelines, et cetera.

This place has a way of keeping one on their toes.