Aperture Science testing archivePortalGUIDES
PORTAL / CHARACTERS

Portal characters & familiar faces

Meet Chell, GLaDOS and the machines that make Aperture’s test chambers memorable.

Edition covered

The original 2007 Portal game by Valve. Screenshots on this page show the PC edition.

6 characters · one picture per entry · open a picture for full size.

Characters and familiar faces

Chell
Playable test subject

Chell

The silent protagonist of Portal. Armed with a portal device, Chell navigates Aperture’s dangerous tests through observation and persistence.

GLaDOS
Aperture’s artificial intelligence

GLaDOS

The voice directing Chell through the Enrichment Center. Her clinical instructions and dry humour make the testing programme increasingly unsettling.

Doug Rattmann
Unseen survivor

Doug Rattmann

A former Aperture scientist whose hidden dens and wall scrawlings appear behind the test chambers.

Sentry Turrets
Aperture security

Sentry Turrets

Soft-spoken automated guards that track movement with a laser and open fire when a target enters their sight. Shown in their Portal 2 design.

Weighted Companion Cube
Testing companion

Weighted Companion Cube

A heart-marked puzzle object that helps hold down buttons and becomes an unlikely companion. Shown in its Portal 2 design.

Personality Cores
GLaDOS’s attachments

Personality Cores

Spheres attached to GLaDOS; Chell detaches and incinerates them in the final battle.

Quick notes

  • A story told through the facility. Chell is the silent test subject at the centre of the original game.
  • Recognise a role before approaching. The Companion Cube is a puzzle object with a memorable identity: it can hold down a button or help redirect the route through a test, but it does not behave like a…
  • Read the artwork labels. Chell, GLaDOS and the Morality Core pictures identify the original game.
FIELD NOTE

Use the game-specific references alongside these role notes.

References