Who voices the corrupted personality cores in Portal 2?

Nolan North voices the corrupted personality cores in Portal 2. During the final battle, these cores are attached to Wheatley to increase his corruption and enable another attempted core transfer.

The group includes the Space Core, Adventure Core, and Fact Core. Each has a distinct comedic personality: the Space Core is fixated on outer space, the Adventure Core imitates a fearless action hero, and the Fact Core rapidly announces a mixture of true-sounding and absurd claims.

Their shared voice actor is an intentional part of the joke. Although the cores sound like separate characters, they are variations on the same energetic vocal performance. North also voiced other Portal 2 parts, including defective turrets, which can make the game’s voice credits easy to mix up.

The cores are not the same as Wheatley, who is voiced by Stephen Merchant, or GLaDOS, who is voiced by Ellen McLain. They are temporary tools in the endgame’s core-corruption sequence, and the Space Core later remains with Wheatley after he is launched into space.