Tessa seems to be a very lively individual. This is demonstrated in Home where Tessa screams "N" in excitement and spins him around very energetically. This is further supported in Dead End where Tessa shouts "N! You remember me. (cough) Tall, handsome, air's toxic" with the same energy she had when she was in Home. She enjoyed fixing broken drones and giving them names and human hair, something other humans disapprove of.