During his time with the United Nations Global Occult Coalition, Clef was a good operative, successfully terminating Threat Entities in the field, though he was still a liar at that time, giving people a different answer each time they asked about his past. Clef is a genre-savvy and eccentric individual, meaning that he will use his knowledge of a genre to draw conclusions about his situation. Clef is also a known liar of all things except SCP Foundation-related issues.