KéSean is an air-mail courier who frequents NamosLabs Incorporated: Blue Islands Tech Division, often delivering parcels of high priority.

Due to his frequent visits to the labs and facilities, KéSean has a friendly relationship with most members in the B.I.T. Division, including the lead technician, Cherri Sokolov.

Unknown to him (in an "accidentally-on-purpose" manner by Cherri herself), KéSean was given exposure to a couple of the experiments in the B.I.T. Division in a "socializing experiment." Because of this, he has unwittingly become a valuable asset to NamosLabs Inc. and is integral to the function of three Mustelles: M5D27Y87, M4D29Y59, M7D13Y53.