Our E3 preview of Portal 2 may have whetted your appetite, but a few more surprises are in store for Valve's upcoming puzzler sequel — such as the silver-tongued Wheatley, whose name should belong to a snobby butler.

Wheatley is a Personality Sphere, one of many that were dislodged from GLaDOS during Portal's finale. Acting as both comedic relief and a useful ally, Wheatley accompanies you through certain portions of the ruined Aperture labs, often dispensing quirky-yet-appropriate advice on how to overcome obstacles and enemies.

As the below video reveals, Wheatley's charm and…well, personality plays right into Valve's promise of delivering the same level of humor that was cherished in the original Portal.

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