In the Books
In The Arctic Incident, Artemis is shown with the school's counselor, Dr. Po, as the counselor tries to convince Artemis to open up to him and talk, to no avail. Artemis also plants a button camera in the Principal's office, and in The Opal Deception Artemis expresses his displeasure at not being able to view the principal's face after listening to the call that Artemis sends, because the camera only works within a mile radius.
Artemis also forges letters and calls from his mother to Saint Bartleby's telling of her outrage and that Artemis's attendance at the school may be terminated if they don't oblige to the Fowl's wishes. 
- Dr. Po
- Dean Guiney
- Artemis Fowl: An Agent Archive eBook Sampler by Eoin Colfer
- The Artemis Fowl Files by Eoin olfer