Thinking in making maybe a 18 year old character. Graduated last year. Came back to the school as an intern teacher. He isn't a staff member per se, but it could still help other teachers, watch their classes and even take a pupil, if the student in question so desires. Thought about that so I could interact with the other students a little bit more, and at the same time, supply the RP need for "staff members" (to pair students with their mentors.