CHELL

Chell, documented as Test Subject #1 but previously as #1498, was a test subject of the Aperture Science computer-aided Enrichment Center, and was involved in the testing of the Company's Handheld Portal Device (commonly known as the Portal Gun).

She is the silent protagonist of Portal and the single-player campaign in Portal 2. Very little is known of her past, beyond her possible abandonment at birth and her stubborn will to live.

Throughout the series, Chell is antagonized by the AI and facility overseer GLaDOS during her testing courses. Wielding only the Handheld Portal Device, she eventually utilizes this device as a means of avoiding hazards and bypassing various sections of the Facility in order to escape.