Agent Epsilon (The Secret Saturdays)

Epsilon was in his lab after the Kur disaster when Zak escaped. Epsilon wasn't stupid; he knew Francis had something to do with it and that he betrayed the organization at that moment. Epsilon wasn't stupid. Epsilon heard footsteps outside his lab. It was Francis walking in circles. Epsilon was about to yell for Francis to come when the lab's cell phone rang.

who is it I speak epsilon as always, without emotion.